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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

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Exercise 1 Page 611

You can solve for the variable by using cross products.

x=10

Practice makes perfect

To solve the proportion, we will use cross products.

2/3=x/15

Cross multiply

2(15)=3(x)

Multiply

30=3x

.LHS /3.=.RHS /3.

10=x

Rearrange equation

x=10