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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

1. Solving One-Step Equations

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Exercise 88 Page 87

Pay close attention to the order of operations.

1

Practice makes perfect

According to the order of operations, the multiplication and division are evaluated first, while addition and subtraction are evaluated last. For the given expression, this means that we should evaluate the multiplication before calculating the subtraction.

-1+2*3-4 Let's perform the operations.

Operation	Before Simplification	After Simplification
Multiply	-1+ 2*3-4	-1+ 6-4
Add and subtract terms	-1+ 6- 4	1

The expression equals 1.

Alternative Solution

Using a Calculator

We can also evaluate this expression using a calculator. To do so, type it as shown below.

Subchapter links

Lesson Check p.85

Practice and Problem-Solving Exercises p.85-87

Standardized Test Prep p.87

Mixed Review p.87