Question

como resolver 4-10x/25=1/5?

Answer 1

4- 10x/25 = 1/5      mmc entre 5 e 25 = 25
4/1- 10x/25  = 1/5

mmc 25-5]5
           5-1]5
            1-1   5² = 25
25(4) - 1(10x) = 5(1)
100 -   10x = 5
-10x = -100 + 5

-10x = - 95 (.-1)
10x = 95

x= 95/10

x= 9,5