Question

решите уравнение: 5/12 - 7/9=10 5/12 - y

Answer 1

$\frac{5}{12}- \frac{7}{9} = 10 \frac{5}{12}-y \\\frac{5}{12}- \frac{7}{9} = \frac{125}{12}-y |*36 \\15-28=375-36y \\36y=375+13 \\36y=388 \\y=10 \frac{28}{36} \\y=10 \frac{7}{9}$