Equations

Inverse

100

What is the inverse of addition?

Subtraction

200

What is the inverse of subtraction?

Addition

300

What is the inverse of multiplication?

Division

400

What is the inverse of division?

Multiplication

500

What does inverse mean?

The opposite or the operation that cancels out the other.

Addition

100

r + 1 = 3

r = 2

200

r + 7 = 26

r = 19

300

14 + X = 19

X = 5

400

X + 18 = 35

X = 17

500

21 + X = -9

X = -30

Subtraction

100

v - 10 = 9

v = 19

200

b - 11 = 21

b = 32

300

b - 3 = 2

b = 5

400

8 = X - 12

X = 20

500

-11 + m = -17

m = -6

Multiplication

100

2x = 12

x = 6

200

11n = 132

n = 12

300

30 = 2a

a = 15

400

5n = 60

n = 12

500

-10k = -20

k = 2

Division

100

n/2 = 3

n = 6

200

m/5 = 1

m = 5

300

3 = a/5

a = 15

400

x/4 = -4

x = -16

500

-11 = x/5

         

x = -55