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Question 214218: I am a mom and trying to see if my daughter got this question right. She is a 7th grader. Her question is Use the distributive property to write an equivalent expression. Then evaluate the expression.
The problem is -3(16+5-1)
Her answer is:
-3*16+3*5-3*(-1)
-48+(-15)-3
-60
Answer by drj(1380)   (Show Source):
You can put this solution on YOUR website! I am a mom and trying to see if my daughter got this question right. She is a 7th grader. Her question is Use the distributive property to write an equivalent expression. Then evaluate the expression.
The problem is -3(16+5-1)
Her answer is:
-3*16+(-3)*5-3*(-1)
-48+(-15)-3
-60 (should be -66 not -60)
I rewrote your expressions above and your daughter got the steps correctly except for the last line should add up to -66.
I hope the above modified steps were clear.
For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.
And good luck with your daughter's studies!
Respectfully,
Dr J
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