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MF.EQ.6 Challenge MF-033-A13-V03

Solve two-step equations and justify each inverse operation.

Choose a direct isolation step and solve

Problem

\(\text{Three}~\text{notebooks}\) at \(x\) dollars each plus a \(\$5\) fee cost \(\$26\), so \(3x~+~5~=~26\). Which operation should come first: A, subtract \(5\); B, divide by \(3\); or C, subtract \(3\)? Choose the operation that isolates \(3x\), then find the price of \(\text{one}~\text{notebook}\).

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Four variants of this problem type
Curriculum context
Standard
MF.EQ.6
Category
Pre-Algebra
Domain
Equations
Objective
Solve two-step equations and justify each inverse operation.
Problem type
Choose a direct isolation step and solve