Solve for A
A=50
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A=100-A
Add 40 and 60 to get 100.
A+A=100
Add A to both sides.
2A=100
Combine A and A to get 2A.
A=\frac{100}{2}
Divide both sides by 2.
A=50
Divide 100 by 2 to get 50.
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 ) }
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Limits
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