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Sagot :

3(2x+5)+x = -2(x+8)+13
6x+15+x = -2x-16+13
7x+15 = -2x-3
9x = -18
x = (-18)/9
x = -2
6x+15+x=-2x-16+13
6x+x+2x=-16+13-15
9x=-18
x=-18/9
x=-2

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