Question

O resultado de “x” na equação 3x / 7 - 2 / 5 = 11 / 35 – x é:

Group of answer choices

0

1/2

1/3

1

Answer 1

Resposta:

3x/7 -2/5= 11/35-x

21x -10=385-x

21×+x=385+10

22x=395

x=395/22

x=17,5

Answer 2

Resposta:

$\frac{3x}{7} - \frac{2}{5} = \frac{11}{35} - x$

$\frac{3x}{7} +x = \frac{11}{35} + \frac{2}{5}$

$\frac{3x}{7} + \frac{7x}{7} = \frac{11}{35} + \frac{14}{35}$

$\frac{10x}{7} = \frac{25}{35}$

$\frac{10x}{7} = \frac{5}{7}$

$10x = 5$

$x = \frac{5}{10}$

$x = \frac{1}{2}$

Explicação passo-a-passo: