Question

Evaluate the expression:
1 - 2(x-y) when x = -2, y = 1

Answer 1

7

Explanation:

Substitute the values into the corresponding variables.

1 - 2(-2 - 1)

1 + 4 + 2

= 7

Answer 2

7

Explanation:

1. Plug in the values of x and y: 1 - 2(-2 - 1)
2. Solve what's in parenthesis: -2 - 1 = -3
3. Plug in -3: 1 - 2(-3)
4. 2 × -3 = -6
5. Plug -6 in: 1 - -6
6. Simplify: 1 + 6
7. 1 + 6 = 7

I hope this helps!