Question

10-(2y-6)-y if y=8

Answer 1

plug in 8 for y

Answer 2

->10-(2(8)- 6)-(8) -> 10-(16-6) -8 -> 10-(10)-8 -> 10- 10 -8 = -8

Answer 3

10-(2y-6)-y
plug y=8
10-(2(8)-6)-8
10-(16-6)-8
10-10-8
0-8
-8

Answer 4

10-(2*8-6)-8

multiply 2 by 8 to get 16
10-(16-6)-8

subtract 6 from 16 to get 10.
10-(10)-8

multiply -1 by the 10 inside the parentheses.
10-10-8

subtract 10 from 10 to get 0.
0-8

Remove the 0 from the polynomial; adding for subtracting 0 does not change the value of expression.
Answer -8