WHAT IS THAT SOMETHING?

ADDITION

100

x + 1 = 10

x = 9

200

a + 2 = 6

a = 4

300

d + 5 = 25

d = 20

400

n + 21 = 35

n = 14

500

2k + 1 = 21

k = 10

SUBTRACTION

100

y - 3 = 0

y = 3

200

r - 10 = 40

r = 50

300

j - 12 = 25

j = 37

400

b - 13 = 39

b = 52

500

5f - 3 = 7

f = 2

MULTIPLICATION

100

3n = 6

n = 2

200

10x = 60

x = 6

300

9e = 27

e = 3

400

5h = 55

h = 11

500

4r + 2 = 22

r = 5

DIVISION

100

y/2 = 7

y = 14

200

n/4 = 10

n = 40

300

a/5 = 3

a = 15

400

45/c = 5

c = 9

500

3w/2 = 6

w = 4

TRICKY MIX!

100

x = x + 1

NO SOLUTION! No number will ever work for this equation.

200

x = x

INFINITE SOLUTIONS! Every number will always work for this equation.

300

x + 5 = x - 3

NO SOLUTION! No number will ever work for this equation.

400

2x + 3x = 5x

INFINITE SOLUTIONS! Every number will always work for this equation.

500

2x + 5 = 2x + 3

NO SOLUTIONS! No number will ever work for this equation.