Algèbre 7e

x = 2

100

(8 - X) =

6

200

(4 + X) + 3 =

9

300

4(6 - X) =

2

8

x = 3

100

(X + 97) =

100

200

3(X + 4) =

21

300

4(8 x X) = 

2

48

x = 4

100

(4 + X) = 

8

200

((-9) + X) + 5 =

0

300

2((-2) + X) + 2 =

2

3

x = 5

100

7 + (X x 9) + 20 = 

72

200

5(5 x 2) =

X

10

300

4(X + 6) + 12 + (6 x 4) =

80

x = 6

100

(X + 3) + 7 =

16

200

(X x 6) + 5 =

41

300

2(X + 4) + 2 =

22