Name:________________________________
Date:_______________
Period:_______
Unit 3 Exam 2 – Equivalent Expressions: Combining Like Terms
Combine like terms to simplify each expression.
1.
6x  x
2.
_______________
3.
_______________
9n  2n
4.
_______________
5.
2x  3  4x  2y  2y
6.
30x  8x  3  7
8.
5x  2y  4x
10.
4x  6  6y  3y
_______________
2x  4  3x  2
12.
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13.
x  10x
_______________
_______________
11.
3n  4  1  2n
_______________
_______________
9.
5x  6  2  10x
_______________
_______________
7.
7x  3x  4y  2y
xxxxx
_______________
Marcus combined like terms and wrote an equivalent expression for:
The result he wrote was:
2x  4y  3x
9x
Describe in words the mathematical mistake he made.___________________________
__________________________________________________________________
What is the correct equivalent expression?_____________________________