Question

nas figuras a b c calcule o valor de x​

Answer 1

Resposta:

$\dfrac{x-5}{x+1}=\dfrac{\not6}{\not24_4}\\ \\ \\ \dfrac{x-5}{x+1}=\dfrac{1}{4}\\ \\ \\ 4.(x-5)=1.(x+1)\\ \\ 4x-20=x+1\\ \\ 4x-x=1+20\\ \\ 3x=21\\ \\ x=\dfrac{21}{3}\\ \\ \\ \boxed{x=7}$

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$\dfrac{8}{x+1}=\dfrac{12}{2x-6}\\ \\ \\ 8.(2x-6)=12.(x+1)\\ \\ 16x-48=12x+12\\ \\ 16x-12x=12+48\\ \\ 4x=60\\ \\ x=\dfrac{60}{4}\\ \\ \\\boxed{ x=15}$