Why I can't divide by y in this equation: 4y = y?
50206
Why should you never divide both sides by a variable when solving an equation?
131223
How to solve the equation $yy''-y'y^2-(y')^2$?
29263
Can not understand simplification of equation
106319
Can we divide two vectors?
157261
I have simple multiplication confusion, any help would be great
43510
For what integer values of $y$ is $\frac{3y-1}{y-3}$ an integer?
15753
Solve the following equation in positive integers $x$ and $y$
51890
simple calculation not working for some reason
94184
Limit $\frac{x^2y}{x^4+y^2}$ is found using polar coordinates but it is not supposed to exist.
79544
Prove $x^3 + 3 =4y(y+1)$ has no integer solutions
149759
Problem on multiplication formulae.
69172
$y'=$ ${-x+\sqrt{(x^2+4y)}}\over 2$ , $y(2)=-1$
127934
Division result is always zero
32454
Why does the division of two integers return 0.0 in Java?
43005
Why does this division result in zero?
89859
I have a problem with power equations
27127
Calculating $\iint (x+y) \, dx \, dy$