Question

Simplify the following expression

1. -2.8+0.9-12-4
2. 2n+5.5-0.9-8-4
HINT:combine like terms

Answer 1

1. -17.9
2. 2n -7.4

Explanation:

In each case, the only "like" terms are the constants. They are added together in the usual way.

1. -2.8 +0.9 -12 -4 = 0.9 -(2.8 +12 +4) = 0.9 -18.8 = -17.9

2. 2n +5.5 -0.9 -8 -4 = 2n +5.5 -(0.9 +8 +4) = 2n +5.5 -12.9 = 2n -7.4