Question

1/4 (5x - 16) - 1/2 (3rd - 8) при x=2 2/5 , y = 6

Answer 1

$frac{1}{4} (5x - 16) - frac{1}{2} (3y - 8) = \ frac{5}{4} x - 4 - frac{3}{2} y + 4 = \ frac{5}{4}x - frac{3}{2} y = frac{5}{4} times 2 frac{2}{5} - frac{3}{2} times 6 = \ frac{5}{4} times frac{12}{5} - frac{3}{2} times frac{6}{1} = \ 3 - 9 = - 6$