Solve for y
y=-5
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2y-5=-15
Swap sides so that all variable terms are on the left hand side.
2y=-15+5
Add 5 to both sides.
2y=-10
Add -15 and 5 to get -10.
y=\frac{-10}{2}
Divide both sides by 2.
y=-5
Divide -10 by 2 to get -5.
Examples
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Matrix
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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