Question

Упростить выражение (1-y/y+1)*3y+3/5

Answer 1

(1-y/y+1)*3y+3/5
1-y/y+1*3(y+1)/5
(1-y)*3/5
3/5-3/5y

Answer 2

$\frac{1-y}{y+1}* \frac{3y+3}{5} = \frac{1-y}{y+1}* \frac{3(y+1)}{5} = \frac{1-y}{1}* \frac{3}{5} = \frac{3-3y}{5}$