\{ x : 30 y = 1 : 4
Solve for x
x=\frac{15}{2y}
y\neq 0
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2xy=15
Multiply both sides of the equation by 60, the least common multiple of 30,4.
2yx=15
The equation is in standard form.
\frac{2yx}{2y}=\frac{15}{2y}
Divide both sides by 2y.
x=\frac{15}{2y}
Dividing by 2y undoes the multiplication by 2y.
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