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Lelechka [254]
3 years ago
7

4b - 7 - 15b + 3 Pls give full explanation I don't understand this stuff.

Mathematics
2 answers:
allsm [11]3 years ago
5 0
Combine like terms so add 4b and 15b together and add 7 and 3 together and then the answer would be 19b-10
mojhsa [17]3 years ago
5 0
4b-7-15b+3

=-11b-4

------------------------------

Explanation:

4b = b+b+b+b

15b = b+b+b+b+b+b+b+b+b+b+b+b+b+b+b

-------------------------------

So...

4b-15b

=(b+b+b+b)-(b+b+b+b+b+b+b+b+b+b+b+b+b+b+b)

=b+b+b+b-b-b-b-b-b-b-b-b-b-b-b-b-b-b-b

=-b-b-b-b-b-b-b-b-b-b-b=-11b

----------------------------------

-7 = -1-1-1-1-1-1-1

3=1+1+1

-7+3=(-1-1-1-1-1-1-1)+(1+1+1)

=-1-1-1-1-1-1-1+1+1+1=-1-1-1-1=-4

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