# Could Someone Simplify: 5(6x +7)?

6(-2a-4b) + 3(-7b-5a) = -(12(a+2b)+3(5a+7b)) = -3(4a+5a + 8b+7b)
= -3(9a+15b) = -9(3a+5b)

-4b(2a-6b) + 5(7ab-2b2) = b(-8a+24b + 35a-10b) = b(27a+14b)

3(1-7x) - 4(-4+10x) = 3 - 21x +16 - 40x = 19-61x

7a - (-2b - 3(4a - (6b-4a))) = 7a - (-2b - 3(4a - 6b + 4a))
= 7a - (-2b - 3(8a - 6b)) = 7a - (-2b - 24a + 18b) = 7a - (-24a + 16b)
= 7a + 24a - 16b = 31a-16b

Your instructor may require the first two to be multiplied out. (The 1st and 4th problems in your list are duplicates.)
thanked the writer.
First & Last Simplified:

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6(-2a - 4b) + 3(-7b - 5a)
=> -12a - 24b - 21b - 15a
=> -12a - 15a - 21b - 24b
=> -27a - 45b
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7a - {-2b -3[4a - (6b - 4a)]}
=> 7a - {-2b - 3[4a - 6b +4a]}
=> 7a - {-2b - 12a + 18b - 12a}
=> 7a - {-2b + 18b - 12a - 12a}
=> 7a - {16b - 14a}
=> 7a - 16b + 14a
=> 21a - 16b

thanked the writer.
5(2a-6b)-3(5a+2b)
thanked the writer.
Ill help you out wit the first one...6(-2a - 4b) +3(-7b - 5a) ...-12a -24b -21b -15a...-27a -45b ...that's the answer...by the way is this your homework?
thanked the writer.
brian ward commented
Lol you took the words right out of my mouth.
Brittany Bigelow commented
Yes it is my homework I'm just trying to figure out if I did it right.
Oddman commented
As a rule, you will get better results here if you don't post the entire homework set. One or two sample problems are usually sufficient for your purpose, and much less likely to trigger the "I'm not going to do your homework for you" response. 