Solve for M
M=-3x-2
Solve for x
x=\frac{-M-2}{3}
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M=7-8x+5x-9
Add 4 and 3 to get 7.
M=7-3x-9
Combine -8x and 5x to get -3x.
M=-2-3x
Subtract 9 from 7 to get -2.
M=7-8x+5x-9
Add 4 and 3 to get 7.
M=7-3x-9
Combine -8x and 5x to get -3x.
M=-2-3x
Subtract 9 from 7 to get -2.
-2-3x=M
Swap sides so that all variable terms are on the left hand side.
-3x=M+2
Add 2 to both sides.
\frac{-3x}{-3}=\frac{M+2}{-3}
Divide both sides by -3.
x=\frac{M+2}{-3}
Dividing by -3 undoes the multiplication by -3.
x=\frac{-M-2}{3}
Divide M+2 by -3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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 ) }
Integration
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Limits
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