\[2n=4x\times 2y\]

Solving for x. Want to solve for n or solve for y instead?
1
Cancel 22 on both sides.
n=4xyn=4xy

2
Divide both sides by 44.
n4=xy\frac{n}{4}=xy

3
Divide both sides by yy.
n4y=x\frac{\frac{n}{4}}{y}=x

4
Simplify  n4y\frac{\frac{n}{4}}{y}  to  n4y\frac{n}{4y}.
n4y=x\frac{n}{4y}=x

5
Switch sides.
x=n4yx=\frac{n}{4y}

Done

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