Question

Resolva as equações
7(x-1)-2(x-5)=x-5
0,1x+3x+0,9x=14+2x

Answer 1

7x-7-2x+10=x-5
7x-2x-x=-5+7-10
4x=-8
x=-8/4
x=-2

0,1x+3x+0,9x=14+2x
0,1x+0,9x+3x-2x=14
1x+1x=14
2x=14
x=14/7
x=2