Solve for x
x\geq 3
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8-3x-2x\leq -7
Subtract 2x from both sides.
8-5x\leq -7
Combine -3x and -2x to get -5x.
-5x\leq -7-8
Subtract 8 from both sides.
-5x\leq -15
Subtract 8 from -7 to get -15.
x\geq \frac{-15}{-5}
Divide both sides by -5. Since -5 is negative, the inequality direction is changed.
x\geq 3
Divide -15 by -5 to get 3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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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