Chapter 3 Solving Linear Equations

Solving Equations by Adding & Subtracting

100

s+11=19

8

200

x-(-7)=-2

-9

300

35=3c-19

18

400

r-(-8+2)=14

8

500

2/5(9+w)=-10

-34

Solving Equations by Multiplying & Dividing

100

9b=135

15

200

35=3c-19

18

300

p/2 -9=-1

16

400

-1/2x-2=-8

-14

500

5/8m+6=-20(-5)

-46

Solving Multi-step Equations

100

-4(x+4)= -2(2x+8)

identity

200

1/8(64r+32)=1/2(16r-8)

no solution

300

3(q-12)=5q+2

-19

400

3/4(2x+5)=6

3/2

500

9(2p+1)-3p=4p-6

-15/11

Solving Decimal Equations

100

8x-5=24

3.63

200

70=9-3x

-20.33

300

4.17n+3.29=2.7n

-2.30

400

2.4(0.3+x)=8.7

3.33

500

23.5a+12.5=9.3a-4.8

-1.22

Formulas, Ratios, Rates & Percents

100

Solve d=m/v for v.

v=m/d

200

A=1/2bh solve for h. Then use the new formula to find the height of a triangle that has an area of 120 sq. cm and a base of 24 cm. 

10 cm

300

You start a trip at 9:00 A.M. and car's odometer reading is 66,300 miles. When you stop driving at 3:00 P.M. the odometer reading is 66,660 miles. What was your average speed?

60mph

400

15% of what number is $36?

$240

500

You buy a sweater that is on sale for 30% off the regular price of $65. How much did you pay for the sweater?

$45.50