Solve for x
x=2
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x+7-5x=-1
Subtract 5x from both sides.
-4x+7=-1
Combine x and -5x to get -4x.
-4x=-1-7
Subtract 7 from both sides.
-4x=-8
Subtract 7 from -1 to get -8.
x=\frac{-8}{-4}
Divide both sides by -4.
x=2
Divide -8 by -4 to get 2.
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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