Respostas

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2014-03-31T17:34:24-03:00
B) x+7x+10y-3x = 8x + 7y
c) 2x-8y-6y-y-9x = -7x - 14y - y = -7x - 15y
d) x-y+3x-2y-4x = 4x - 4x-3y = -3y
e) -9x-x+2y = -10x+2y
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2014-03-31T17:36:15-03:00