IDNLearn.com: Where questions are met with accurate and insightful answers. Ask any question and get a thorough, accurate answer from our community of experienced professionals.

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


Sagot :

[tex]130\%(7+n)=91 \\ 1.3(7+n)=91 \\ 7+n=\frac{91}{1.3} \\ 7+n=70 \\ n=70-7 \\ n=63[/tex]
[tex]1.3(7+n)=91|:1.3\\7+n=70|-7\\ n=63[/tex]