How to solve $5x+9y=n$?
1495
The Frobenius Coin Problem
117697
How to solve 5x=0.01^x
41782
Real Solution of $4^x + 6^x = 9^x$.
138078
Solve $2000x^6+100x^5+10x^3+x-2=0$
20705
On equations $m^2+1=5^n$
61105
solve$\frac{xdx+ydy}{xdy-ydx}=\sqrt{\frac{a^2-x^2-y^2}{x^2+y^2}}$
87345
How many ways so that $x+y+z\leq n$?
105263
Find the value of $x,y$ for the equation $12x+5y=7$ using number theory .
82358
How to prove that $4^m + 5^m$ is divisible by 9 when m is an odd number
45343
Solve $\cos^{n}x-\sin^{n}x=1$ with $n\in \mathbb{N}$.
109343
Solve Euler Project #9 only mathematically - Pythagorean triplet
70460
How can I solve the following sequence
15268
Find all $x,y \in \mathbb N^*$ such that $\frac{1}{x} + \frac{1}{y}=5$
62446
Solve the equation $x^2+\frac{9x^2}{(x+3)^2}=27$
144765
Solving $\sqrt{x+5} = x - 1$
157264
Solve $\frac1x+\frac1y=\frac1{pq}$
72857
Find the number of integral solutions of $2x + y + z = 20$?