Question

-2 5/6n+1 1/12n - 3 1/2 n = (2 1/18 - 1 1/9) *3 3/5 Помогите пожалуйста буду благодарен !)

Answer 1

$-2frac56n+1frac1{12}n-3frac12n=left(2frac1{18}-1frac19right)cdot3frac35\-frac{17}6n+frac{13}{12}n-frac72n=left(frac{37}{18}-frac{10}9right)cdotfrac{18}5\-frac{34}{12}n+frac{13}{12}n-frac{42}{12}n=left(frac{37}{18}-frac{20}{18}right)cdotfrac{18}5\-frac{63}{12}n=frac{17}{18}cdotfrac{18}5\-frac{21}4n=frac{17}5\n=frac{17}5:left(-frac{21}{4}right)=-frac{17}5cdotfrac{4}{21}=-frac{68}{105}$