Solving Linear Equations

Simple 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

50 = r/0.2

 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

What is -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

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

all numbers

500

4(f -2) = 4f

no solution

Equations with fractions

100

6/5 = (x + 1)/15

17

200

x/3 + 1 = 2/3

-1

300

2/3 = (x-2)/9

8

400

0.2x - 3 = 0.3x - 2

-10

500

(x-1)/2-3 = x/3

21

Rewriting Formulas

100

5x = y solve for x

x= y/5

200

y = mx + b solve for m

m=(y-b)/x

300

ay - b = c solve for y

y= (b + c)/a

400

3x - 4y = 7 solve for y

y= (3x - 7)/4

500

yx - a = cx solve for x

x=a/(y-c)