Question

1- resolva as equacoes: a) [x-2]=120 b) (x+1)/(x-1)=12

Answer 1

a) (x-2)=120
x=120+2
x=122

b) (x+1)/(x-1)=12
x+1=12x-12
x-12x=-12-1
-11x=-12-1
-11x=-13
x=-13/-11
$x= \frac{13}{11}$