Question

responder as atividades

a)4×-15=5
b)2×+4=3×+6
c)12×+5=8×+29
d)8×+6=5×+48​

Answer 1

Resposta:

a) x = 5

b) x = -2

c) x = 6

d) x = 14

Explicação passo-a-passo:

a) 4x - 15 = 5

4x = 5 + 15

4x = 20

x = 20÷4

x = 5

b) 2x + 4 = 3x + 6

2x - 3x = 6 - 4

- x = 2 ×(-1)

x = -2

c) 12x + 5 = 8x + 29

12x - 8x = 29 - 5

4x = 24

x = 24÷4

x = 6

d) 8x + 6 = 5x + 48

8x - 5x = 48 - 6

3x = 42

x = 42÷3

x = 14