Chapter 1: Q. 1.78 (page 53)

Simplify:
a) $- 42 + (- 28)$
b) $25 + (- 61)$

Short Answer

Expert verified

Part(a) The required answer is $- 70$ .

Part(b) The required answer is $- 36$ .

Step by step solution

Part(a) Step 1. Given Information

Given expression: $- 42 + (- 28)$

Part(a) Step 2. Calculation

We have, $- 42 + (- 28)$

The signs are the same, so we have to perform addition.

The answer will be negative because there are only negatives.

$- 42 + (- 28) = - 70$

Part(b) Step 1. Given Information

Given expression: $25 + (- 61)$

Part(b) Step 2. Calculation

We have, $25 + (- 61)$

The signs are different, so we have to subtract $25$ from $61$ .

The answer will be negative because there are more negatives.

$25 + (- 61) = - 36$

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Simplify:
a) $- 42 + (- 28)$
b) $25 + (- 61)$

Short Answer

Step by step solution

Part(a) Step 1. Given Information

Part(a) Step 2. Calculation

Part(b) Step 1. Given Information

Part(b) Step 2. Calculation

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Simplify:a) -42+(-28)b)25+(-61)

Short Answer

Step by step solution

Part(a) Step 1. Given Information

Part(a) Step 2. Calculation

Part(b) Step 1. Given Information

Part(b) Step 2. Calculation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Logic and Functions

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Probability and Statistics

Discrete Mathematics

Study anywhere. Anytime. Across all devices.

Simplify:
a) $- 42 + (- 28)$
b) $25 + (- 61)$