Chapter 1: Q. 92 (page 38)

In the following exercise, simplify each expressions.
$- (4 - 5) - (7 - 8)$

Short Answer

Expert verified

The simplified value is 2.

Step by step solution

Step 1. Concept Used.

According to subtraction property, the subtraction of a number is equal to the addition of its opposite. This can be expressed as follows.

$a - b = a + (- b)$

Step 2. Simplification inside parentheses.

Add the opposite of 5 with 4 inside the first parentheses and opposite of 8 with 7 in the second parentheses.

$- (4 - 5) - (7 - 8) = - (- 1) - (- 1)$

Step 3. Calculation.

Add the opposite of the opposite of 1 with the opposite of the opposite of 1.

$\begin{array}{rcl} - (- 1) - (- 1) & = & 1 + 1 \\ = & 2 \end{array}$

Step 4. Conclusion.

The simplified value of the given expression is 2.

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In the following exercise, simplify each expressions.
$- (4 - 5) - (7 - 8)$

Short Answer

Step by step solution

Step 1. Concept Used.

Step 2. Simplification inside parentheses.

Step 3. Calculation.

Step 4. Conclusion.

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In the following exercise, simplify each expressions.-4-5-7-8

Short Answer

Step by step solution

Step 1. Concept Used.

Step 2. Simplification inside parentheses.

Step 3. Calculation.

Step 4. Conclusion.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Pure Maths

Mechanics Maths

Statistics

Calculus

Geometry

Decision Maths

Study anywhere. Anytime. Across all devices.

In the following exercise, simplify each expressions.
$- (4 - 5) - (7 - 8)$