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Pearson Algebra 1 Common Core, 2011 View details

7. Graphing Rational Functions

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Exercise 66 Page 712

Instead of subtracting a negative number, you can add.

- 4.9

Practice makes perfect

Let's perform the subtraction.

- 10.25-(- 5.35)

SubNeg

a-(- b)=a+b

- 10.25 + 5.35

CommutativePropAdd

Commutative Property of Addition

5.35 + (- 10.25)

AddNeg

a+(- b)=a-b

5.35 - 10.25

SubTerm

Subtract term

- 4.9

We can see that subtracting a negative number is the same as adding its positive counterpart. Below we will demonstrate by finding - 10.25 and moving 5.35 units to the right on the number line.