Solve for a
a=3
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a+15+2=20
Multiply 3 and 5 to get 15.
a+17=20
Add 15 and 2 to get 17.
a=20-17
Subtract 17 from both sides.
a=3
Subtract 17 from 20 to get 3.
Examples
Quadratic equation
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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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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