Question

2.(3-y+7.(2-y)=15-4y​

Answer 1

Resposta:

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

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

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

- 5y = -5 (-1)

5y = 5

y = 5/5

y = 1

Answer 2

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

2(3-y+14-7y) = 15-4y

2(17-8y) = 15-4y

34-16y = 15-4y

34-15 = -4y+16y

12y = 19

y = 19/12