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Sagot :

Réponse:

a.

4x-15 = x+1

4x-x = 1+15

3x = 16

x = 16/3

B.

-5x-2 =-x+18

-5x+x = 18+2

-4x = 20

X = 20/4

C.

1,2x + 0,3 = 0,4

1,2x = 0,4-0,3

1,2x= 0,1

X = 0,1/1

D.

2/3x + 1/5 = 3/4x + 1/3

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