Question

3) Resolva as seguintes equações do 1 grau:
a) 2x = 12
b) 4x = 16
c) 6x = 36
d) 2x = 20
e) 5x = 25
f) 10x = 50 ​

Answer 1

→ Cálculo :

A) 2x = 12

x = 12 ÷ 2

x = 6

B) 4x = 16

x = 16 ÷ 4

x = 4

C) 6x = 36

x = 36 ÷ 6

x = 6

D) 2x = 20

x = 20 ÷ 2

x = 10

e) 5x = 25

x = 25 ÷ 5

x = 5

F) 10x = 50

x = 50 ÷ 10

x = 5