Solve for a
a=4
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3+a-4a=-9
Subtract 4a from both sides.
3-3a=-9
Combine a and -4a to get -3a.
-3a=-9-3
Subtract 3 from both sides.
-3a=-12
Subtract 3 from -9 to get -12.
a=\frac{-12}{-3}
Divide both sides by -3.
a=4
Divide -12 by -3 to get 4.
Examples
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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