Question

2×(3-y)+7×(2-y)=15-4y

Answer 1

2.(3-y)+7.(2-y)=15-4y

6-2y+14-7y=15-4y

-2y-7y+4y=15-6-14

-5y=-5            multiplica por (-1)

5y=5

y=5/5

y=1