Question

calcule o valor de x

a) 5/4=10/x

b) x/3= 8/6

c) 2x/5=9/10​

Answer 1

Resposta
a:x=8
b:x=4
c:x=2,25

Answer 2

a) $\frac{5}{4}=\frac{10}{x}$

$\frac{10}{8}=\frac{10}{x}$

$8=x$

$x=8$

b) $\frac{x}{3}=\frac{8}{6}$

$\frac{2x}{6}=\frac{8}{6}$

$2x=8$

$x=\frac{8}{2}$

$x=4$

c) $\frac{2x}{5}=\frac{9}{10}$

$\frac{4x}{10}=\frac{9}{10}$

$4x=9$

$x=\frac{9}{4}$