Write and Solve Two Step Equations

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What is a two-step equation?

Back

A two-step equation is an algebraic equation that requires two operations to solve for the variable.

Tags

CCSS.7.EE.B.4A

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How do you isolate a variable in a two-step equation?

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To isolate a variable, perform the inverse operations in the reverse order of how they are applied.

Tags

CCSS.7.EE.B.4A

Front

What does it mean to solve an equation?

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To solve an equation means to find the value of the variable that makes the equation true.

Tags

CCSS.7.EE.B.4A

Front

What is the first step in solving the equation 2(x + 15) = -6?

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The first step is to distribute the 2, resulting in 2x + 30 = -6.

Tags

CCSS.7.EE.B.4A

Front

How do you check if your solution to an equation is correct?

Back

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

Tags

CCSS.6.EE.B.5

Front

What is the solution to the equation -9r + 12 = -24?

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The solution is r = 4.

Tags

CCSS.7.EE.B.4A

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What does the equation C = 15 + 0.20x represent?

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This equation represents the monthly cell phone bill (C) based on a fixed charge of $15 and a variable charge of $0.20 per minute of usage (x).

Tags

CCSS.HSF.LE.B.5

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How do you set up an equation for 'eight less than 7 times a number'?

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The equation is 7x - 8.

Tags

CCSS.6.EE.B.6

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What is the solution to the equation 7x - 8 = 3x + 4?

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The solution is x = 3.

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What does 'one fourth of the sum of a number and two is three' translate to in equation form?

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The equation is 1/4(2 + n) = 3.