Solving Equations with rational numbers

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What is a rational number?

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A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

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CCSS.5.NBT.A.2

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What does it mean to solve an equation?

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To solve an equation means to find the value(s) of the variable(s) that make the equation true.

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CCSS.8.EE.C.7B

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Combine like terms on the left side of the equation.

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How do you isolate a variable in an equation?

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To isolate a variable, you perform inverse operations to both sides of the equation until the variable is alone on one side.

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CCSS.6.EE.B.7

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n = 3.88.

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CCSS.7.EE.B.4A

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Distribute, combine like terms, and isolate x.

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CCSS.8.EE.C.7B

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What does it mean to combine like terms?

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Combining like terms means to add or subtract terms that have the same variable raised to the same power.

Tags

CCSS.7.EE.A.1

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x = 2.

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CCSS.8.EE.C.7B

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How do you handle negative coefficients in equations?

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You can distribute the negative sign and simplify the equation as you would with positive coefficients.

Tags

CCSS.8.EE.C.7B

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n = 5.

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CCSS.8.EE.C.7B