Solve for x
x\geq -4
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1-2x\leq 3\times 3
Multiply both sides by 3. Since 3 is positive, the inequality direction remains the same.
1-2x\leq 9
Multiply 3 and 3 to get 9.
-2x\leq 9-1
Subtract 1 from both sides.
-2x\leq 8
Subtract 1 from 9 to get 8.
x\geq \frac{8}{-2}
Divide both sides by -2. Since -2 is negative, the inequality direction is changed.
x\geq -4
Divide 8 by -2 to get -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
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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