Solve for x
x<-12
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7x+9<5x-15
Use the distributive property to multiply 5 by x-3.
7x+9-5x<-15
Subtract 5x from both sides.
2x+9<-15
Combine 7x and -5x to get 2x.
2x<-15-9
Subtract 9 from both sides.
2x<-24
Subtract 9 from -15 to get -24.
x<\frac{-24}{2}
Divide both sides by 2. Since 2 is positive, the inequality direction remains the same.
x<-12
Divide -24 by 2 to get -12.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
Arithmetic
699 * 533
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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