102nd Problem 2016

Algebra Level 1

Find the value of x x satisfying

8 4 = x − 1 5 . \dfrac 84 = \dfrac{x-1}5 .

Check out the set: 2016 Problems .


The answer is 11.

Angela Fajardo by Angela Fajardo , 19, Philippines

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1 solution

Ashish Menon
Apr 22, 2016

8 4 = x − 1 5 2 1 = x − 1 5 10 = x − 1 x = 11 \begin{aligned} \dfrac{8}{4} & = \dfrac{x - 1}{5}\\ \\ \dfrac{2}{1} & = \dfrac{x - 1}{5}\\ \\ 10 & = x - 1\\ \\ x & = \boxed{11} \end{aligned}

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