addition
subtraction
multiplication
division
mixed
100

x+5=9

x=4

100

x-6=11

x=17

100

2x=14

x=7

100

x/3=9

x=27

100

x-8=10

x=18

200

x+49=60

x=11

200

x-18=32

x=50

200

7x=42

x=6

200

x/8=8

x=64

200

4x=28

x=7

300

15=x+7

x=8

300

3=x-15

x=18

300

72=8x

x=9

300

3=x/11

x=33

300

45=x/10

x=450

400

x+4=-2

x=-6

400

x-7=-5

x=2

400

12x=-36

x=-3

400

x/6=-5

x=-30

400

x+9=-3

x=-12

500

x+(-15)=15

x=30

500

x-(-20)=40

x=20

500

-0.02=2x

x=-0.01

500

x/0.1=20

x=2

500

x/300,000=0

x=0

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