Me ajudem a resolver essa questão da foto. Encontrar o valor de x.
Ola Itamara
8/(8 + 12) = x/(x + 9)
8x + 72 = 20x
12x = 72
x = 6
pronto
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Verified answer
Ola Itamara
8/(8 + 12) = x/(x + 9)
8x + 72 = 20x
12x = 72
x = 6
pronto