Question

13) Resolva as seguintes equações.
a) 7x=49
b) x+10=18
c) 2x-7=15
d) 2x+2=-1
e) 6x+12=54
f) 5x-14=31
g) 4x+28=-24
h) 9x-13=95​

Answer 1

Resposta:

A) x = 49/7 = 7

B) x = 18 - 10 = 8

C) 2x = 15 + 7

2x = 22

x = 22/2

x = 11

D) 2x = - 1 - 2

2x = - 3

x = - 3/2

x = - 1,5

E) 6x = 54 - 12

6x = 42

x = 42/6

x = 7

F) 5x = 31 + 14

5x = 45

x = 45/5

x = 9

G) 4x = - 24 - 28

4x = - 52

x = - 52/4

x = - 13

H) 9x = 95 + 13

9x = 108

x = 108/9

x = 12