Question

a) $\frac{1}{4 } = \frac{2}{x}$

b) $\frac{2}{3} = \frac{x}{21}$

c) $\frac{x}{10} = \frac{6}{10}$

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Answer 1

Resposta:

a) $\frac{1}{4} = \frac{2}{x}$

$\frac{1}{4}$ x $\frac{2}{x}$
1x= 2*4
1x = 8
x=8/1
x=8

b)$\frac{2}{3} = \frac{x}{21}$
$\frac{2}{3}$ x $\frac{x}{21}$
3x=2*21
3x=42
x=21/3
x=7

c) $\frac{x}{10} = \frac{6}{10}$
$\frac{x}{10}$ x $\frac{6}{10}$
10x=10*6
10x=60
x=60/10
x=6