Solve for y
y=-6
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-12=2y
Add -15 and 3 to get -12.
2y=-12
Swap sides so that all variable terms are on the left hand side.
y=\frac{-12}{2}
Divide both sides by 2.
y=-6
Divide -12 by 2 to get -6.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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