Question

Ajudem !!!

7-Resolva as seguintes equações:

a) x- 7 = -7

b) 4x - 10 = 2x + 2

c) 5x + 7 = 4x + 10 ​

Answer 1

a) x- 7 = -7

x = - 7 + 7

x = 0

b) 4x - 10 = 2x + 2

4x - 2x = 2 + 10

2x = 12

x = 12/2

x = 6

c) 5x + 7 = 4x + 10

5x - 4x = 10 - 7

x= 3