Question

Evaluate the expression
12-3y divided by 2 + y(2y-4 divided by y) for y = 3

Answer 1

The value of the expression is -15.


Work:

Substitute y = 3 into the expression:

12 - 3(3) / 2 + 3(2(3) - 4 / 3)

Simplify:

12 - 9 / 2 + 3(6 - 4 / 3)

12 - 9 / 2 + 3(18 / 3 - 4 / 3)

12 - 9 / 2 + 3(14 / 3)

12 - 9 / 2 + 14

24 - 9 + 28 / 2

15 + 28 / 2

15 + 14

-15