Solve for x
x=-3
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2x+3=\frac{-15}{5}
Divide both sides by 5.
2x+3=-3
Divide -15 by 5 to get -3.
2x=-3-3
Subtract 3 from both sides.
2x=-6
Subtract 3 from -3 to get -6.
x=\frac{-6}{2}
Divide both sides by 2.
x=-3
Divide -6 by 2 to get -3.
Examples
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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