Question

решите уравнение 4/5 - (x + 1/60) = 2/3 100 баллов

Answer 1

$frac{4}{5} - (x + frac{1}{60}) = frac{2}{3} \ frac{4}{5} - frac{2}{3} = x + frac{1}{60}$
$frac{4 times 3 - 5 times 2}{15} = x + frac{1}{60}$
$frac{2}{15} = x + frac{1}{60}$
$x = frac{2}{15} - frac{1}{60} = frac{4 times 2 - 1}{60}$
$x = frac{7}{60}$

Answer 2

$frac{4}{5} - (x + frac{1}{60} ) = frac{2}{3}$
$frac{4}{5} - x - frac{1}{60} = frac{2}{3}$
$frac{4}{5} - frac{1}{60} - frac{2}{3} = x$
$frac{12 times 4 - 1 times 1 - 2 times 20}{60} = x$
$frac{48 - 1 - 40}{60} = x$
$x = frac{7}{60}$