Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
1. Algebraic Expressions
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Exercise 7 Page 93

Remember that only like terms can be combined. An expression in simplest form has no like terms and parentheses.

22-2z

Practice makes perfect
An expression in simplest form has no like terms and parentheses. Let's first rewrite this expression as a sum to identify all like terms. 14 - 3z + 8 + 1 z ⇓ 14 + ( - 3z) + 8 + 1 z Remember that like terms — constant terms or terms with the same variable and the same exponent — can be combined. In this case, we have two z-terms and two constants. We will rearrange the expression according to the Commutative Property of Addition. Then, we will combine like terms to simplify the expression.
14+(- 3z)+8+1z
14+8+(- 3z)+1z
14+8+(- 3+1)z
22+(- 2)z
22-2z