September 2018 1 13 Report
SUPER URGENTE!

De las siguientes ecuaciones cuales son equivalentes?
a) 2x + 4y = 20
5x - 3y = 10
b) 2x - 6y = 10
5x + y = 8
c) 3x - 9 = -2
6x - 18 = 3
d) 3x + y = 10
9x + 3y = 30

Explica por que elegiste esa respuesta.

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