Question

Решите уравнение: 1/3х + 1/4х + 1/5х= 1 19/75

Answer 1

$frac13x+frac14x+frac15x=1frac{19}{75}\frac{20+15+12}{60}x=frac{94}{75}\frac{47}{60}x=frac{94}{75}\x=frac{94}{75}:frac{47}{60}\x=frac{94}{75}cdotfrac{60}{47}=frac23$