Question

упростите выражение: 4/15(1 2/3н-4,5)-1 1/2(8/27н+5,4)

Answer 1

$frac{4}{15} (1 frac{2}{3} n - 4.5) - 1 frac{1}{2} ( frac{8}{27} n + 5.4) = frac{4}{15} ( frac{5}{3} n - frac{45}{10} ) - frac{3}{2} ( frac{8}{27} n + frac{54}{10} ) = frac{4 times 5}{15 times 3} n - frac{4 times 45}{15 times 10} - frac{3 times 8}{2 times 27} n - frac{3 times 54}{2 times 10} = frac{4}{9} n - frac{6}{5} - frac{4}{9} n - frac{81}{10} = - frac{12 + 81}{10} = - frac{93}{10} = - 9.3$