Two-Step Equations with Rational Numbers

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What is a two-step equation?

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A two-step equation is an algebraic equation that requires two operations to solve for the variable. It typically involves isolating the variable by performing an inverse operation twice.

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Add 4.1 to both sides to isolate the term with the variable.

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

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Perform inverse operations in the reverse order of operations: first undo addition or subtraction, then undo multiplication or division.

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Subtract 6 from both sides.

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Translate the word problem: Hannah ordered books for her son. Each book costs $7.25 and there is a shipping fee of $6.75. If her total cost was $93.75, what equation represents this situation?

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What is the total cost equation for Dawson’s Garage if they charge $55 per hour and the parts cost $142?

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Add 9.15 to both sides.

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