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Sagot :

A.
5x - 3x = 3
2x = 3
x=3/2

B.
8x - 12x = 4
-4x = 4
x= 4/-4
x=-1

C.
-7y -10y = -4
-17y = -4
y= -4/-17
y=4/17

D.
7x+x = -4 -1
8x = -5
x= -5/8

e.
3x+3x = 7-2
6x = 5
x=5/6

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