Back to Explain equation solving steps — Problem 2 · Task Set 31

HSA.REI.A.1 Tutor Intake — Properties of Equality and Justified Equation Solving

This short check helps your tutor understand where to start. Answer each question without help. If you are not sure, give your best try — the goal is to find what to work on together, not to grade you.

Grade 9·7 problems·~12 min·Common Core Math - HS Algebra·standard·hsa-rei-a-1

Work through problems with immediate feedback

Concepts

A student is solving $3x + 7 = 22$ . The student writes the next line
as $3x = 15$ and cites a reason.

Which reason is correct?

Addition Property of Equality — add 7 to both sides

Subtraction Property of Equality — subtract 7 from the left side only

Subtraction Property of Equality — subtract 7 from both sides

Distributive Property — factor out 7