Question

3,5y+0,8=5,5y-(1,2y+0,8)-2,4

Answer 1

3,5y+0,8=5,5y-1,2y-0,8-2,4

3,5y+0,8=4,3y-3,2

4,3y-3,5y=0,8+3,2

0,8y=4

y=5

Answer 2

Спосибо

Answer 3

3.5y+0.8=5.5y-(1.2y+o.8)-2.4

3.5y+0.8=5.5y-1.2y-0.8-2.4

3.5y+0.8-5.5y+1.2y+0.8+2.4=0

-0.8y+4=0

-0.8y=-4

y=5