Back to Explain equation solving steps — Problem 3 · Task Set 32

Exercises: Explain Each Step in Solving an Equation

Work through each section in order. Show your work and justify your reasoning where indicated.

Grade 9·21 problems·~35 min·Common Core Math - HS Algebra·standard·hsa-rei-a-1
Work through problems with immediate feedback
A

Fluency Practice

1.

A student writes the following step while solving an equation:

2x6+4x=3x+12    6x6=3x+122x - 6 + 4x = 3x + 12 \;\Rightarrow\; 6x - 6 = 3x + 12

What is the correct justification for this step?