2x:(x+7) =3:5 podrian ayudarme a resolver calculando el valor de x
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2x/(x + 7) =3/5
2x = 3/5(x + 7)
2x = 3/5x + 21/5
2x - 3/5x = 21/5
(10x - 3x)/5 = 21/5
7x/5 = 21/5
7x = 21/5 × 5
x = 21/7
x = 3
2x = 3/5(x + 7)
2x = 3/5x + 21/5
2x - 3/5x = 21/5
(10x - 3x)/5 = 21/5
7x/5 = 21/5
7x = 21/5 × 5
x = 21/7
x = 3
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