Solving Equations 7th to 8th grade

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What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing variables.

Tags

CCSS.6.EE.A.2C

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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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Subtract 12 from both sides to isolate the term with the variable.

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CCSS.7.EE.B.4A

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CCSS.7.EE.B.4A

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How do you check your solution for an equation?

Back

Substitute the solution back into the original equation to see if both sides are equal.

Tags

CCSS.8.EE.C.7B

Front

What is the principle of balancing equations?

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The principle states that whatever you do to one side of the equation, you must do to the other side to maintain equality.

Tags

CCSS.6.EE.B.7

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What does it mean if an equation has 'no solution'?

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It means there are no values for the variable that can satisfy the equation.

Tags

CCSS.8.EE.C.7A

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Back

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What is a variable in an equation?

Back

A variable is a symbol, often a letter, that represents an unknown value in an equation.

Tags

CCSS.6.EE.A.2B

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What does it mean to combine like terms in an equation?

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Combining like terms means to simplify an expression by adding or subtracting terms that have the same variable raised to the same power.

Tags

CCSS.7.EE.A.1