Solve for a
a=9
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3a=18+9
Add 9 to both sides.
3a=27
Add 18 and 9 to get 27.
a=\frac{27}{3}
Divide both sides by 3.
a=9
Divide 27 by 3 to get 9.
Examples
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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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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