### Home > CAAC > Chapter 2 > Lesson 2.1.2 > Problem 2-18

2-18.

Substitute −1 for *d*.

−4(−1) + 3

Simplify the terms and combine them.

4 + 3 = 7

7

Follow the steps in part (a).

Put everything you substituted inside parenthesesso you do not lose your negative signs.

(4) − (−10)

Follow the steps in part (a).

−2

Follow the steps in part (a).