Question

3- Obetenha o X da questao

Answer 1

Resposta:

a) 3x + 2x + 9 + 16 = 180

5x = 180 - 25

x = $\frac{155}{5}$

x = 31

b) 2x + 90 + 180 - (8x - 66) = 180

2x - 8x + 270 + 66 = 180

-6x = 180 - 336

x = $\frac{156}{6}$

x = 26

c) 2x + x + 60 = 180

3x = 120

x = 40

d) 5x - 1 + 12 + 3x - 7 = 180

8x = 180 - 4

x = 22