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7 (5+x) = -2x - 1
35 + 7x = -2x - 1
7x + 2x = 1 + 35
9x = 36
X = 4
.
C.
6 (3+x) - 2 = 4 (x-12)
18 + 6x -2 = 4x - 48
6x - 4x = - 48 - 16
2x = - 64
X = - 32
Cuma bisa segitu.. Maaf