Question

2x+1÷x-3=30÷8


X-2÷7=x+1÷14

Answer 1

Resposta:

a) x = 7

b) x = 5

Explicação passo a passo:

$\frac{2x+1}{x-3} = \frac{30}{8}$

8.(2x+1) = 30.(x-3)

16x + 8 = 30x - 90

16x-30x = -90-8

-14x = -98  (multiplica por -1)

x = 7

$\frac{x-2}{7} = \frac{x + 1}{14}$

14.(x-2) = 7.(x+1)

14x - 28 = 7x + 7

14x - 7x = 7 + 28

7x = 35

x = 5