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devin06 devin06
  • 13-07-2015
  • Mathematics
Answered

the sum of twice a number and 18 less than the number is the same difference between -30 and the number. What is the number?

Verified Answer :

naǫ
naǫ naǫ
  • 13-07-2015

x - the number

\(2x+x-18=-30-x \\ 3x-18=-30-x \\ 3x+x=-30+18 \\ 4x=-12 \\ x=\frac{-12}{4} \\ x=-3\)

The number is -3.

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