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

Sagot :

naǫ
[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]
konrad509
[tex]1.3(7+n)=91|:1.3\\7+n=70|-7\\ n=63[/tex]
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