Solve for a
a=-5
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3a+8=-7
Combine 5a and -2a to get 3a.
3a=-7-8
Subtract 8 from both sides.
3a=-15
Subtract 8 from -7 to get -15.
a=\frac{-15}{3}
Divide both sides by 3.
a=-5
Divide -15 by 3 to get -5.
Examples
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y = 3x + 4
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Matrix
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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 ) }
Integration
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Limits
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