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Levart [38]
3 years ago
11

1. simplify the expression 3(21m+27)

Mathematics
2 answers:
EastWind [94]3 years ago
8 0
1 is A.  You need to distribute the external values to everything in the parentheses.

tensa zangetsu [6.8K]3 years ago
5 0
1.   3(21 + 27) 
     3 x 21 = 63   3 x 27 = 81
so..............
it together is
63 + 81 is the answer

2. 7 x (-3) 
parenthesis means its not negative unless the negative symbol isnt on the outside
so the answer is
21

Hope this helps,
xXharleyquinn04Xx
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When multiplying several factors together, an even number of negative signs will result in a positive answer.

↠ Because when you multiply two negative signs together, the negative signs turn into a positive sign, giving you a positive answer.

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When multiplying several factors together, an odd number of negative signs will result in a negative answer.

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