Question

Determine o termo desconhecido:

a)20/25=8/×
b)×/4=15/12​

Answer 1

resolução!

A )

20/25 = 8/x

20x = 8 * 25

X = 200/20

X = 10

20/25 = 8/10

B )

x/4 = 15/12

12x = 4 * 15

X = 60/12

X = 5

5/4 = 15/12

espero ter ajudado

Answer 2

$\frac{20}{25}=\frac{8}{x}$

$20x=25.8$

$20x=200$

$x=\frac{200}{20}$

$x=10$

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$\frac{x}{4}=\frac{15}{4}$

$12x=15.4$

$12x=60$

$x=\frac{60}{12}$

$x=5$