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Pearson Algebra 1 Common Core, 2011 View details

8. An Introduction to Equations

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Exercise 14 Page 56

Remember that addition of a negative number is the same as subtraction.

False

Practice makes perfect

Consider the given equation. 14+7+(- 1)=21 To determine whether this equation is true, false, or open, we need to simplify it by following the order of operations.

14+7+(- 1)? =21

AddNeg

a+(- b)=a-b

14+7-1? =21

AddSubTerms

Add and subtract terms

20≠21

Since the left-hand side and the right-hand side are not equal, the equation is false.