Уравнение 4/15y=2/5 7/8y=14 9/10y=4 1/2

[latex] 1)\frac{4}{15} y = \frac{2}{5} * \frac{15}{4}= \frac{30}{20} = \frac{3}{2} =1,5y = \frac{2}{5} [/latex] [latex]2) \frac{7}{8} y = 14[/latex] [latex] y = 14*\frac{8}{7}=2*8=16[/latex] [latex]3) \frac{9}{10} y = 4 \frac{1}{2} [/latex] [latex]\frac{9}{10} y = \frac{9}{2} [/latex] [latex] y = \frac{9}{2} * \frac{10}{9}= \frac{10}{2} = 5[/latex]