Question

01. Calcule o valor de x sabendo que r
r // s //t.
b)
a)
X
15
20
12
c)
d)
3x
6
6
8
2
10
х​

Answer 1

Explicação passo-a-passo:

$\frac{x}{4} = \frac{15}{12} \\ 12x = 15 \times 4 \\ 12x = 60 \\ x = \frac{60}{12} \\ x = 5$

$\frac{3}{x} = \frac{5}{20} \\ 5x = 20 \times 3 \\ 5x = 60 \\ x = \frac{60}{5} \\ x = 12$

$\frac{3x}{10} = \frac{6}{2} \\ 3x \times 2 = 10 \times 6 \\ 6x = 60 \\ x = \frac{60}{6} \\ x = 10$

$\frac{6}{x} = \frac{8}{x + 1} \\ 6 \times (x + 1) = 8x \\ 6x + 6 = 8x \\ 6 = 8x - 6x \\ 6 = 2x \\ \frac{6}{2} = x \\ x = 3$