Răspunsuri

2014-11-08T10:17:54+02:00
7x-35+63-5x-4=9×+18-21x
7x+28-5x-4=9x+18-21x
7x-5x+24=9x+18-21x
2x+24=9x+18-21x
2x+24=-12x+18
2x+24+12x=18
14x+24=18
14x=18-24
14x=-6
x= \frac{-6}{14}

Numai e +4 ci e -4
a scuze... stai ca editez acum
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