Espero te ayude
Explicación paso a paso:
-7( y - 4) = -2 (9 + y)
-7y + 28 = -2 (9 + y)
-7y + 28 = -2 (y + 9)
-7y + 28 = -2y - 18
-7y + 28 - 28 = -2y - 18 - 28
-7y = -2y - 46
y= 46/5
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Espero te ayude
Explicación paso a paso:
-7( y - 4) = -2 (9 + y)
-7y + 28 = -2 (9 + y)
-7y + 28 = -2 (y + 9)
-7y + 28 = -2y - 18
-7y + 28 - 28 = -2y - 18 - 28
-7y = -2y - 46
y= 46/5