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0.3 x8 = 0.4X
2.4 = 0.4X
X = 2.4/0.4 = 6
0.3 /0.4 = x/8 , de aqui tenemos
(3/10) / (4/10) = x/8 , simplificamos
3 / 4 = x / 8 , simplificamos ahora la 4ta de los denominadores de ambos terminos
3 = x /2 -----> x = 3*2 = 6