Question

resolva as equaçoes

a) 4x+4=3x+6

b) 4x-15=2x+7

c) 4(x+5)+10=5(7+2x)

Answer 1

Resposta:

a)

$4x + 4 = 3x + 6 \\ 4x - 3x = 6 - 4 \\ x = 2$

b)

$4x - 15 = 2x + 7 \\ 4x - 2x = 7 + 15 \\ 2x = 22 \\ x = \frac{22}{2} \\ x = 11$

c)

$4(x + 5) + 10 = 5(7 + 2x) \\ 4x + 20 + 10 = 35 + 10x \\ 4x - 10x = 35 - 30 \\ - 6x = 5 \\ 6x = - 5 \\ x = - \frac{5}{6}$

Answer 2

Resposta:

A)

4x + 4 = 3x + 6

4x - 3x = 6 - 4

x = 2

B)

4x - 15 = 2x + 7

4x - 2x = 7 + 15

2x = 22

x = 22/2

x = 11

C)

4(x + 5) + 10 = 5(7 + 2x)

4x + 20 + 10 = 35 + 10x

4x + 30 = 35 + 10x

4x - 10x = 35 - 30

- 6x = 5

x = 5/-6

x = - 5/6

Abraço!!!