Solve for A
A=4
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A=\frac{-20}{-5}
Divide both sides by -5.
A=4
Divide -20 by -5 to get 4.
Examples
Quadratic equation
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Matrix
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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