Question

preciso das contas'-'​

Answer 1

Resposta:

A) 2x + 3 = 15

2x = 15 - 3

2x = 12

x = 12/2

x = 6

B) 7x - 1 = 13

7x = 13 + 1

7x = 14

x = 14/7

x = 2

C) 2x - 4 = 3

2x = 3 + 4

2x = 7

x = 7/2

D) 4x + 2 = -18

4x = -18 -2

4x = -20

x = -20/4

x = -5

E) 5x - 2 = 7 +6

5x = 7 + 6 + 2

5x = 15

x = 15/5

x = 3

F) 10x + 1 = -4 -5

10x = -4 -5 -1

10x = -10

x = -10/10

x = -1