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3 years ago

Six times the sum of a number and twelve is forty

1 answer:

3 0

n is a number
"the sum of a number and twelve" is (n+12)
"Six times the sum of a number " is 6(n+12)

6(n+12)=40
6n+72=40
6n=40-72
6n= - 32
n=-32/6 = -16/3 or -5 1/3

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(arranged from top to bottom)

System #3, where x=6

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