Question

-2/3y +5/21y+1/7y Приведите подобные слагаемые:

Answer 1

—$\frac{2}{3y}$ + $\frac{5}{21y}$ + $\frac{1}{7y}$ = —$\frac{14}{21y}$ + $\frac{5}{21y}$ + $\frac{3}{21y}$ = —$\frac{6}{21y}$ = —$\frac{2}{7y}$