Respostas

2013-09-23T17:08:44-03:00
16x+2x=-15-5+3
18x=-17
x=-17/18
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3 3 3
2013-09-23T17:11:24-03:00
16x+5-3=-2x-15
16x+2 = -2x - 15
16x +2x = -15 - 2
18x = -17
x= -17/18
2 4 2