Question

qual e o numero x tal que 4 -x = 4 x ?

Answer 1

4-x=4x
-x-4x=-4
-5x=-4(-1)
5x=4
x=4/5

Answer 2

4 - x =4 x
4 x =4 - x
4 x + x = 4
5 x = 4/5