Respuestas

2013-11-04T02:42:01+01:00
5x+9x=2
14x=2
x= \frac{2}{14}
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9x+8x= -94
17x= -94
x= \frac{-94}{17}
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x+267=1x-3
x-x= -267-3
0= -270
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-9x+15=9x-1
-9x-9x= -15-1
-18x=-16
x= \frac{-16}{-18}
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-5+x+12x-20=9
13x= 9+20+5
13x= 34
x= \frac{34}{13}