Equivalent Expression
Definition of Equivalent Expression
More about Equivalent Expression
Examples of Equivalent Expression
Solved Example on Equivalent Expression
Choose an expression that is equivalent to the expression 2n + 7(3 + n).
Choices:
A. 9n + 21
B. -9n + 21
C. -9n - 21
D. n + 21
Correct Answer: A
Solution:
Step 1: 2n + 7(3 + n) [Original expression.]
Step 2: = 2n + 7(3) + 7(n) [Use the distributive property.]
Step 3: = 2n + 21 + 7n [Multiply.]
Step 4: = 2n + 7n + 21 [Use the commutative property.]
Step 5: = 9n + 21 [Combine like terms.]
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