Question

QUESTÃO 35: Resolva as equações.
a) 3x48
b) x + 5=28
c) 5x -1=19
d) 6x + 10=4
a) 4x + 12 = 38
1) 8x - 12=72​

Answer 1

Resposta:

a) 40 x 3 = 120

8 x 3 = 24

120 + 24 = 144

b) 28 - 5 = 23

c) 19 + 1 = 20

20 / 5 = 4

d) 4 - 10 = -6

-6 / 6 = -1

e) 38 - 12 = 26

26 / 4 = 6,5

f) 72 + 12 = 84

84 / 8 = 10,5

Answer 2

Resposta:

A) 3 x 48 = 144.

B) X + 5 = 28

28 - 5 = 23.

C) 5x - 1 = 19

5x = 19 + 1

x = 20 ÷ 5

x = 4.

D) 6x + 10 = 4

6x = 4 - 10

x = -6 ÷ 6

x = -1.

E) 4x + 12 = 38

4x = 38 - 12

x = 16 ÷ 4

x = 4.

F) 8x - 12 = 72

8x = 72 + 12

x = 84 ÷ 8

x = 10,5.