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ladydahvie1998 ladydahvie1998
  • 22-12-2014
  • Mathematics
Answered

130% of the sum of 7 and a number n is equal to 91.

Verified Answer :

naǫ
naǫ naǫ
  • 22-12-2014

\(130\%(7+n)=91 \\ 1.3(7+n)=91 \\ 7+n=\frac{91}{1.3} \\ 7+n=70 \\ n=70-7 \\ n=63\)

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konrad509
konrad509 konrad509
  • 22-12-2014

\(1.3(7+n)=91|:1.3\\7+n=70|-7\\ n=63\)

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