Question

Resolva as equações.

A)3•(-2+3)=-4(-x+6)

B)-6(-3+2x)=3+4(2x-1)

C)8x+9=-3+4x+5

Answer 1

a) 3•(-2+3)=-4(-x+6)
3×1=4x-24
3=4x-24
-4x=-24-3
-4x=-27
x=27/4

b) -6(-3+2x)=3+4(2x-1)
18-12x=3+8x-4
18 -12x=-1+8x
-12x-8x=-1-18
-20x=-19
x= 19/20

c) 8x+9=-3+4x+5
8x+9=2+4x
8x-4x=2-9
4x=-7
x=-7/4