Simplify (7x) - (-2x). O 5x 0 -5x O 9x 0-9x NEXT QUESTION 2 ASK FOR UEL
Mathematics · Middle School · Tue Nov 03 2020
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Given the numerical expression:
(7x) - (-2x)
Simplifiy:
It must be taken to note that when a negative number is multiplied or introduced to a negative number, the sign becomes positive. It is a general rule that opposite signs will result to a negative number, while the same signs will result to a positive number, hence - (-2x) will become +2x.
= (7x) - (-2x)
= 7x + 2x
= 9x
Final answer:
9x