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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 2 Page 85

How can you isolate m on the right-hand side?

m=13

Practice makes perfect

By adding 4 to both sides, we can cancel the - 4 on the right-hand side and isolate m.

9 = m-4

LHS+4=RHS+4

9 +4= m-4+4

Add terms

13=m

Rearrange equation

m=13

So, m=13 is the solution to the equation. To check that we have the correct solution, we can substitute m=13 into the original equation and simplify.

9 = m-4

m= 13

9? = 13-4

Subtract terms

9 = 9

Since the left-hand side and right-hand side are equal, m=13 is a correct solution.

Subchapter links

Lesson Check p.85

Practice and Problem-Solving Exercises p.85-87

Standardized Test Prep p.87

Mixed Review p.87