Question

A) 2x/2=16
B) 2.(3x-1)-2.(3-x)
C) x/3=-5
D) 7.(x-1)=2.(3x+1)

Answer 1

a)  multiplica cruzado, dara   32= 2x           x=16
2(3x-1)-2(3-x)    faz chuveirinho
6x-2-6+2x
8x-8
8x=8
x=1
c) multiplica cruzado   dara   -15= x    x=15
d) 7(x-1) = 2(3x+1)    chuveirinho
7x-7=6x+2
7x-6x=2+7
x=9