Integers
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100

 15 + (-9) =

6

100

 5 + X = 45

X =40

100

4X - 5 = 7

X = 3

100

X/6=5

X = 30

100

x + 8 = 15

X = 7

200

-35 + 22 =

-13

200

X+13=24

X = 11

200

2X + 12 = 22

X=5

200

4X = 32

X = 8

200

X - 15 = 9

X = 24

300

(5)(-3) = 

-15

300

X - 13 = 14

X = 27

300

6x - 8 = -8

X=0

300

10X = 500

X = 50

300

X + 18 = 43

X = 25

400

(-11)(-3)

33

400

X - 19 = 42

X = 61

400

X/2 + 7 = 17

X = 20

400

12X = 60

X = 5

400

50 + X = 67

X = 17

500

(-24) + (-27) =

-51

500

X - 17 = 19

X = 36

500

 X/5 + 4 = 8

X = 20

500

X/8 = 8

X = 64

500

X + 26 = 54

X = 28