Problem 65 - Introductory Algebra for College Students

Question

Simplify each series of additions and subtractions. $$-0.16-5.2-(-0.87)$$

Step-by-Step Solution

Answer

-4.49

Step 1: Identify the subtractions and additions

The exercise has the form: -0.16 - 5.2 - (-0.87). It's important to first recognize the operation -(-A) which is equivalent to +A. Therefore, the exercise simplifies to -0.16 - 5.2 + 0.87 instead.

Step 2: Add and subtract the decimals

Next, perform the mathematical operations. It is easier to carry out if done in stages. Start by subtracting 5.2 from -0.16, it gives -5.36. Then, add 0.87 to -5.36 which gives -4.49 as the final answer.