hdhdheheksns hdhdheheksns
  • 03-02-2017
  • Mathematics
contestada

Simplify the equation -3(5-7x)

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amayacbeau
amayacbeau amayacbeau
  • 03-02-2017
The answer is 21x - 15.

To solve, distribute the -3 to the numbers in the parentheses.

-3 (5 - 7x)
-15 + 21x  (Multiplying two negatives makes a positive)
21x - 15 (Commutative Property allows you to switch the numbers around)
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