Question

me ajudem eu nao sei​

Answer 1

Resposta:

Olá!

Explicação passo-a-passo:

2. a)$\frac{1}{3}=\frac{x}{15}$

$3.x=15.1$

$3x=15$

$x=\frac{15}{3}$

$x=5$

$\frac{1}{3}=\frac{5}{15}$

b) $\frac{x}{4}=\frac{6}{8}$

$8.x=4.6$

$8x=24$

$x=\frac{24}{8}$

$x=3$

$\frac{3}{4}=\frac{6}{8}$

c) $\frac{5}{2}=\frac{15}{x}$

$5.x=15.2$

$5x=30$

$x=\frac{30}{5}$

$x=6$

$\frac{5}{2}=\frac{15}{6}$

d) $\frac{x}{7}=\frac{27}{21}$

$21.x=27.7$

$21x=189$

$x=\frac{189}{21}$

$x=9$

$\frac{9}{7}=\frac{27}{21}$

e) $\frac{7,5}{1,5}=\frac{x}{6}$

$1,5.x=7,5.6$

$1,5x=45$

$x=\frac{45}{1,5}=\frac{450}{15}$

$x=30$

$\frac{7,5}{1,5}=\frac{30}{6}$

Bons Estudos!