7a-2[3a+(2a-6)-4=
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7a -2 [ 5a -10

7a-10a+20

-3a +20 is your answer

 

goin to bed now  ill help out more later
by Level 6 User (15.3k points)
What is 9M-31a+55?
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by
jared has vowed to walk 100 miles a month. if he can walk 1 half mile in 20 minutes, how many minutes will it take  him to walk 100 miles?
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Ask this as a new question. http://mathhomeworkanswers.org/ask
The answer is 4,000 minute for 100 miles. This coming from a 12 year old.
What is the answer for -63.75 x 13.46 x 7.8
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what is 2ft 8 inches plus 5ft 3 inches plus 3 ft 6 inches
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converting inches to feet
see the question above. I answered this there.

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