Solve for x
x=-\frac{y}{5}+1
Solve for y
y=5-5x
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15x=15-3y
Subtract 3y from both sides.
\frac{15x}{15}=\frac{15-3y}{15}
Divide both sides by 15.
x=\frac{15-3y}{15}
Dividing by 15 undoes the multiplication by 15.
x=-\frac{y}{5}+1
Divide 15-3y by 15.
3y=15-15x
Subtract 15x from both sides.
\frac{3y}{3}=\frac{15-15x}{3}
Divide both sides by 3.
y=\frac{15-15x}{3}
Dividing by 3 undoes the multiplication by 3.
y=5-5x
Divide 15-15x by 3.
Examples
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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