Solve for x
x=-4
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x-4=3x+4
Subtract 1 from 5 to get 4.
x-4-3x=4
Subtract 3x from both sides.
-2x-4=4
Combine x and -3x to get -2x.
-2x=4+4
Add 4 to both sides.
-2x=8
Add 4 and 4 to get 8.
x=\frac{8}{-2}
Divide both sides by -2.
x=-4
Divide 8 by -2 to get -4.
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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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