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Chapter 1: Q. 331 (page 81)

Use the properties of Identity, Inverse, and zero, simplify12+78+-12

Short Answer

Expert verified

After simplification, the answer is78

Step by step solution

01

Step 1. Given Information. 

The given expression is12+78+-12

02

Step 2. Use Commutative property of addition

When adding or multiplying changing the order gives the same result,

Ifa,bare real numbers thena+b=b+a

03

Step 3. Simplification using the property

Notice the first and third terms are opposites.

12+78+-12

Use the commutative property of addition to re-order the terms.

12+-12+78

Add left to right

0+78

Add

78

The answer is78

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Most popular questions from this chapter

In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, by 3, by 5, by 6, and by 10.

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In the following exercises, simplify each expression.

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In the following exercises, find the prime factorization.

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In the following exercises simplify.

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