Respostas

A melhor resposta!
2013-08-22T20:25:13-03:00
2x-7=8-4x
2x+4x=8+7
6x=15
x= \frac{15}{6}
x=2,5
:D
2 5 2
2013-08-22T22:23:23-03:00
2x + 4x = 8 +7 =
=6x = 15=
= x = 15/6 =
=x =5/2.
2 3 2