Question

resolva as equações do 1° grau:
a) x-1 - 2x-1 = x
------- -------- -------
4 3 12

b)5(3x-1)-4(2-4x)=2(x-4)

Answer 1

a) $\frac{x-1}{4} - \frac{2x-1}{3}= \frac{x}{12}$
fazendo mmc fica: $\frac{-5x+1}{12}= \frac{x}{12}$
-5x+1=x --- -6x=-1 --- x= 1/6

b)15x-5-8+16x=2x-8
   31x-13-2x+8
   28x=5
x= 5/28