one step equations

Check for Understanding

100

What is the first step you should take when solving the equation x+7=15

 subtract 7

200

In the equation 3x=12, this operation is used to isolate the variable.

Division

300

You want to solve the equation (1/4)x = 5. What operation helps you get rid of the fraction?

multiply both sides by 4/1

400

what do we call a pair of numbers like -10 and 10 or -19 and 19?

Opposites

500

This word describes a value that makes an equation true when substituted for the variable.

solution

subtracting one step equations

100

5 - a = 4

1

200

B - 50 = - 11

39

300

180 - a = 300

120

400

1,820 - a = 980

840

500

r - 2 = -5

-3

adding on step equations

100

10 + a = 5

-5

200

 68 + a = 18

-50

300

n + 14= 24

38

400

6 + r = -18 

-24

500

a + 12= 19 

7

fractions

100

x/4=5

x=20

200

(1/5)x=8

x=40

300

x/20=5 

100

400

(1/3)x=3

9

500

(2/3)x=10

-1

multiplcation/division

100

8s=48

s=6

200

45x=180

x=4

300

x/7=7

x=49

400

11g= 110

g=10

500

8x =72

x=9