Question

ache o "X" da fração equivalente

A) 1/4=5/×

B) 81/27=×/9

C) ×/5=40/25

D) 6/×=1/3

E) 3/4=×/20​

Answer 1

Resposta:

$\dfrac{1}{4}=\dfrac{5}{x}\\1\timesx=4\times5\\x=20\\\\\dfrac{81}{27}=\dfrac{x}{9}\\27\timesx=81\times9\\27x=729\\x=\dfrac{729}{27}\\x=27\\\\\dfrac{x}{5}=dfrac{40}{25}\\25\timesx=5\times40\\25x=200\\x=\dfrac{200}25\\x=8\\\\\dfrac{6}{x}=\dfrac{1}{13}\\1\timesx=6\times13\\x=78\\\\\dfrac{3}{4}=\dfrac{x}{20}\\4\timex=3\times20\\4x=60\\x=\dfrac{60}{4}\\x=15$

Explicação passo-a-passo: