Question

Me ajudem

5(x+10)=2x+40

2x-30=x+5-3

4x+30=46

Answer 1

Resposta:

a) 5.(x+10) = 2x + 40

5x + 50 = 2x + 40

5x - 2x = 40 - 50

3x = - 10

$x = - \frac { 10}{3}$

b) 2x - 30 = x + 5 - 3

2x - x = 5 - 3 + 30

x = 2 + 30

x = 32

c) 4x + 30 = 46

4x = 46 - 30

4x = 16

$x = \frac{16}{4}$

x = 4