Solve for a
a=2
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-3a=-1-5
Subtract 5 from both sides.
-3a=-6
Subtract 5 from -1 to get -6.
a=\frac{-6}{-3}
Divide both sides by -3.
a=2
Divide -6 by -3 to get 2.
Examples
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\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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