Solve for x
x=\frac{a-12y}{8}
Solve for a
a=8x+12y
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8x=a-12y
Subtract 12y from both sides.
\frac{8x}{8}=\frac{a-12y}{8}
Divide both sides by 8.
x=\frac{a-12y}{8}
Dividing by 8 undoes the multiplication by 8.
x=\frac{a}{8}-\frac{3y}{2}
Divide a-12y by 8.
a=8x+12y
Swap sides so that all variable terms are on the left hand side.
Examples
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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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