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3(x - 18) - 10 = 2(x - 7)
3x - 54 - 10 = 2x - 14
3x - 64 = 2x - 14
3x - 2x = - 14 + 64
x = 50
Respuesta.
x = 50
-54 -10 +14= 2x - 3x
-64 +14 = -1x
-50 % -1 = x
50 = x