Solving Linear Equations

Solving Equations by Addition,Subtraction, Multiplication, & Division

100

r-21= -37

 -16

200

r + (-1/2) = -3/4

 -1/4

300

6x = -42

 -7

400

(5/2)a = -25

-10

500

5 = r/2

 10

Solving Multi-Step Equations

100

4p - 7 = 5

 3

200

6 = 4v +2

 1

300

(c/-4) -8=-42

 136

400

(y/3) + 6=-45

 -153

500

(4d + 5)/7 = 7

11

Solving Equations with the Variable on Each Side

100

n-2=4 - 2n

 2

200

3-4q = 10q +10

 -0.5

300

5t - 9 = -3t +7

 2

400

4(1 +d)-5 = 3d -2

-1

500

4(f -2) = 4f

0/ no solution

Ratios, proportions, & % of change

100

Solve the proportion (6/15) = (n/15)

 18

200

Solve the proportion: (2/3) = (b + 5)/9

1

300

Solve the percent of change: original: 40 new: 32

 20%

400

Solve the percent of change: original: 50 new: 88

 76%

500

Solve the percent of change: original: 35 new: 37.1

 6%

Solving Equations & Formulas

100

5x = y solve for x

 x= y/5

200

yx - a = cx solve for x

 x = a/y-c

300

ay - b = c solve for y

 y= (b + c)/a

400

3x - 4y = 7 solve for y

 y= (3x - 7)/4

500

y = mx + b

 m = (y-b)/x