Question

Eu Queria Saber Dessa Reposta
5-×-20=5×-10-7×

Answer 1

5 - x - 20 = 5 x - 10 - 7 x
- x - 5 x + 7 x = - 10 - 5 + 20
x = - 15 + 20
x = 5

Bons estudos!

Answer 2

5 - x - 20 = 5x - 10 - 7x 
-x - 15 = -2x - 10 
x = 5