Question

como faço? x/2 + x/5 - x/10 = 1 - 4x/5

Answer 1

x/2 + x/5 - x/10 = 1 - 4x/5

5x/10 + 2x/10 - x/10 = 10/10 - 8x/10

6x/10 + 8x/10 = 10/10

14x/10 = 10/10

14x = 10

x = 10/14

x= 5/7               S = { 5/7 }