37. 1:r+i
Solve each equation. Then check your solution' '16. s-19:-34 15. zt-9:74
19.a*55:-17 7) -)\: -'l 50-|a 25. 18 - (-f): e\
z: 44 21.. -I8: *67 4' d
18. 18 *
24.b-(-es) :1U 27. -2.56f c:0.89 30. 6.2: -4.83 + y
28.k+0.6:-3.84 3't.
aa
33.;r-;:; 14 36.i+r:*g
37.
39. If x
g+ 5:33
20.t-72:-44 23. r - (-19\: -77 26. 125 - (-P) : 88 29.
-6:7n
+ (-3.42)
32.q-2.78:4.2
t-8.5:7.r5
34.a-+:-^ 3l.U
17.
ll
35.-;+P:E ss. +:w ++
)4
1:r+i
- 7 :14, what is the value of x - 2? B : -I2, what is the value of t + 1?
40. If f 1
GEOMETRY For Exercises 41' and 42, use the rectangle at the right' 41. Write an equatron you could use to solve for x and then solve for x'
(y
24 cm
-
17) cm
42. Wrlte an equation you could use to solve for Y and then solve for Y'
equation and Write an equation for each problem' Then solve the check Your solution' Find the number' 43. Eighteen subtracted from a number equals 31' 44. \Atrat number decreased by 77 eqtals -18? number' 45. Anumber increased by -16 is -21' Find the number? 46. The suri" of a number and -43 is 102. \Alhat is the
\
'
4T.Whatnumberminusone-halfisequaitonegativethree-fourths? 48.ThestLrmof19and42and'anumberisequaltoBT.Whatisthenumber? 4g. Determine whethe r x
x is sometimes, always, ot neaer true' Explain'
50. Determine whether
x is sometimes, always, or neTer true' Explain'
* x: x* 0:
following information' , miles mire on a gallorqpf gasoline A midsize .u, -ith a 4-cylinder "ngin" goes 10 midsize car consumes cine gallon of than a luxury .u'. *itt", an B-cyiindSt-""[i"". A GAS MILEAGE For Exercises 51-55, use the gas for every 34 miles driven'
i
51. Write an addition equation to represent the situation'
52.Howmanymilesd.oesaluxurycartravelonagallonofgasoline? 13 miles more than a luxury 53. A subcompact car with a 3-cylinder engine goes j^r. Hoi" far does"a ,rr6.o*pu.t car travel on a gallon car on
""J;;ll;;"f of gasoline?
54.Howmanymoremilesdoesasubcompacttrarrelonagallonofgasolinethana midsize car? a 6-cylinder engine goes on one 55. Estimate how many miles a full-size car with gallon of gasoline' Explain your reasoning'
132
Chapter
3
Solving Linear Equattons
19.a*55:-17 7) -)\: -'l 50-|a 25. 18 - (-f): e\
z: 44 21.. -I8: *67 4' d
18. 18 *
24.b-(-es) :1U 27. -2.56f c:0.89 30. 6.2: -4.83 + y
28.k+0.6:-3.84 3't.
aa
33.;r-;:; 14 36.i+r:*g
37.
39. If x
g+ 5:33
20.t-72:-44 23. r - (-19\: -77 26. 125 - (-P) : 88 29.
-6:7n
+ (-3.42)
32.q-2.78:4.2
t-8.5:7.r5
34.a-+:-^ 3l.U
17.
ll
35.-;+P:E ss. +:w ++
)4
1:r+i
- 7 :14, what is the value of x - 2? B : -I2, what is the value of t + 1?
40. If f 1
GEOMETRY For Exercises 41' and 42, use the rectangle at the right' 41. Write an equatron you could use to solve for x and then solve for x'
(y
24 cm
-
17) cm
42. Wrlte an equation you could use to solve for Y and then solve for Y'
equation and Write an equation for each problem' Then solve the check Your solution' Find the number' 43. Eighteen subtracted from a number equals 31' 44. \Atrat number decreased by 77 eqtals -18? number' 45. Anumber increased by -16 is -21' Find the number? 46. The suri" of a number and -43 is 102. \Alhat is the
\
'
4T.Whatnumberminusone-halfisequaitonegativethree-fourths? 48.ThestLrmof19and42and'anumberisequaltoBT.Whatisthenumber? 4g. Determine whethe r x
x is sometimes, always, ot neaer true' Explain'
50. Determine whether
x is sometimes, always, or neTer true' Explain'
* x: x* 0:
following information' , miles mire on a gallorqpf gasoline A midsize .u, -ith a 4-cylinder "ngin" goes 10 midsize car consumes cine gallon of than a luxury .u'. *itt", an B-cyiindSt-""[i"". A GAS MILEAGE For Exercises 51-55, use the gas for every 34 miles driven'
i
51. Write an addition equation to represent the situation'
52.Howmanymilesd.oesaluxurycartravelonagallonofgasoline? 13 miles more than a luxury 53. A subcompact car with a 3-cylinder engine goes j^r. Hoi" far does"a ,rr6.o*pu.t car travel on a gallon car on
""J;;ll;;"f of gasoline?
54.Howmanymoremilesdoesasubcompacttrarrelonagallonofgasolinethana midsize car? a 6-cylinder engine goes on one 55. Estimate how many miles a full-size car with gallon of gasoline' Explain your reasoning'
132
Chapter
3
Solving Linear Equattons
