Solve for x
x<-7
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-4x>5+23
Add 23 to both sides.
-4x>28
Add 5 and 23 to get 28.
x<\frac{28}{-4}
Divide both sides by -4. Since -4 is negative, the inequality direction is changed.
x<-7
Divide 28 by -4 to get -7.
Examples
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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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