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Pearson Geometry Common Core, 2011

PG

Pearson Geometry Common Core, 2011 View details

Chapter Review

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Exercise 7 Page 481

You can solve for the variable by using cross products.

6

Practice makes perfect

To solve the proportion, we will start by using cross products, then we will use the Properties of Equality.

x/7=18/21

Cross multiply

x(21)=7(18)

Multiply

21x=126

.LHS /21.=.RHS /21.

x=6