Answer :

[tex] \frac{u}{5}+13=36[/tex] ⇒ [tex] \frac{u}{5}=36-13 = 23 [/tex]

[tex]u=23*5[/tex]

[tex]\boxed {u=115}[/tex]
eu99li
[tex]36= \frac{u}{5}+13 \\ -13.... -13 \\ ------ \\ 23= \frac{u}{5} \\ => u=23*5=115[/tex]

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