Question: Emma solves 3x-4=2x+1 what is her error if she says the solution is x=5?
A) She added 2x instead of subtracting
B) she forgot to add 4 to both sides
C) she didn't combine like terms correctly
D) she made a correct solution
Correct answer: D
Grade: 6 | Topic: Expressions and Equations | Difficulty: Medium | Standard: 6.EE.B.7