Question

2) Após a nossa aula online resolva as questões a seguir:
a) 2x + 3 = 9
b) 5x - 4 = 10 - X
c) 3x + 2 = x - 4​

Answer 1

a) 2x + 3 = 9

2x = 9 - 3

2x = 6

x = 6/2

x = 3

b) 5x - 4 = 10 - x

5x + x = 10 + 4

6x = 14

x = 14/6

x = 7/3

c) 3x + 2 = x - 4

3x - x = - 4 - 2

2x = - 6

x= -6/2

x = -3