Bonsoir tout le monde :D Quelqun pourrais m'expliquer comment faire svp ? 4(x-7) = 5-(7-x)
4(x-7) = 5 -(7-x)
= 4x -28 = 5-7+x
= 4x-x = 28+5-7
= 3x = 26
x = 26/3
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4(x-7) = 5 -(7-x)
= 4x -28 = 5-7+x
= 4x-x = 28+5-7
= 3x = 26
x = 26/3