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Addition
Subtraction
Multiplication
Division
Surprise
100

 X + 7 = 23

What is X = 16

100

P - 3 = 10

What is P = 13

100

2X = 14

What is X = 7

100

X / 10 = 5

What is X = 50

100

3x = 18 

What is X = 6

200

X + 17 = 25

What is X = 8

200

K - 15 = 45

What is K = 60

200

9f = 72

What is F = 8

200

A / 5 = 5

What is A = 25

200

-9 + h = 17

What is H = 26

300

12 + Y = 36

What is X = 24

300

W - 16 = 3

What is W = 19

300

13h = 26

What is H = 2

300

R / 13 = 4

What is R = 52

300

N / 20 = 4

N = 80

400

10 + x = 3

What is X = -7

400

 X - 12 = -3

What is X = 9

400

-2y = -14

What is Y = 7

400

J/ -10 = 4

What is J = -40

400

N - 33 = 100

What is n = 133

500

-10 + X = 3 

What is X = 13

500

-12 + R = -7 

What is R  = 5

500

-3d = 21

What is D = -7

500

S / -6 = -6

What is S = 36

500

-9x = -45 

What is X = 5