Question

Resolva as equações :
a)-39+2x=-25
b)-30+5x=-30
c)-105+×=72
d)x+4=x-7
e)4x-4=2x+7
f)6x+4=7
g)5x-2(x-7)
h)4((3x-1)-2(4x6)=4
i)-(8x-1)+6(3x-10)=31

Answer 1

a) -39+2x= -25
2x= -25+39
2x = 14
x = 14/2
x=7

b)-30+5x= -30
5x= -30+30
5x= 0