Solve for x
x=\frac{y}{8}
Solve for y
y=8x
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2y=16x
Multiply 4 and 4 to get 16.
16x=2y
Swap sides so that all variable terms are on the left hand side.
\frac{16x}{16}=\frac{2y}{16}
Divide both sides by 16.
x=\frac{2y}{16}
Dividing by 16 undoes the multiplication by 16.
x=\frac{y}{8}
Divide 2y by 16.
2y=16x
Multiply 4 and 4 to get 16.
\frac{2y}{2}=\frac{16x}{2}
Divide both sides by 2.
y=\frac{16x}{2}
Dividing by 2 undoes the multiplication by 2.
y=8x
Divide 16x by 2.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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