april316
april316
06-12-2015
Mathematics
contestada
simplify the expression-3(b-7)
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Аноним
Аноним
06-12-2015
-3(b - 7)
Multiply -3 into the parenthesis.
= -3b + 21.
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MathWz
MathWz
06-12-2015
Multiply -3 to each term in the parentheses:
-3(b)= -3b
-3(-7)= 21
These are not like terms, so write them as an expression:
-3b + 21 or 21 - 3b
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