ligninger

Plus

100

x - 5 = 2

x = 7 

200

x-8=13

x=21

300

x-77=43

x=120

400

3x-12=2x+3

x=15

500

-4x-15=2x+7

x=-11/3

Minus

100

x + 3 = 6

x = 3

200

x+5=8

x=3

300

-7+x=-3

x=4

400

14=3x+5

x=3

500

 x+6=4+7

x=5

Gange

100

x : 7 = 3

x = 21

200

36 : x = 6

X = 6

300

27 : x = 3

X = 9

400

72 : x = 4

X = 18

500

232 : x = 8

X = 29

Division

100

3x = 9

x = 3 

200

10x = 50

5

300

4x+12=4

x=-2

400

6(3x-8)=42

x=5

500

-3/21=x/7

x= -49

Reducer

100

a+a+a *a 

3a²

200

5x-(2x-3)

3x+3

300

(2a-b)-(a-8b)

a+7b

400

25x2y)-(7x-y)

18x+3y

500

8+7x+(3y-4x+5)-3-2y

10+3x+y