Solving Proportion Equations

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What is a proportion?

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CCSS.7.RP.A.2B

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How do you solve a proportion equation?

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CCSS.6.EE.B.7

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What does it mean if a proportion is undefined?

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A proportion is undefined when the denominator of a fraction is zero, as division by zero is not possible.

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x = 26.

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CCSS.7.RP.A.3

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What is the cross-multiplication method?

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The cross-multiplication method involves multiplying the numerator of one fraction by the denominator of the other fraction to find the value of the variable.

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CCSS.7.EE.B.4A

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x = 7.

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CCSS.8.EE.C.7B

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CCSS.HSA.REI.A.2

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x = 7.

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CCSS.HSA.REI.A.2

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What is a variable in a proportion?

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A variable is a symbol (often x) that represents an unknown value in an equation.

Tags

CCSS.6.EE.B.7

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x = 1.

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CCSS.6.EE.B.7