Envision Math 2.0: Grade 6, Volume 1
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Envision Math 2.0: Grade 6, Volume 1 View details
7. Simplify Algebraic Expressions
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Exercise 8 Page 164

Remember, only like terms can be combined.

y-4.5

Practice makes perfect
The first step in simplifying this expression is to identify which, if any, terms can be combined. Remember, only like terms — constant terms or terms with the same variable — can be combined. 7y - 4.5 - 6y In this case, we have two y-terms and one constant. Only the y-terms can be combined, so to simplify the expression we will rearrange it according to the Distributive Property to combine the like terms.
7y-4.5-6y
7y-6y-4.5
(7-6)y-4.5
1y-4.5
y-4.5