Solve for x
x\leq -1
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15x-21\geq 12x-20+4x
Use the distributive property to multiply 3 by 5x-7.
15x-21\geq 16x-20
Combine 12x and 4x to get 16x.
15x-21-16x\geq -20
Subtract 16x from both sides.
-x-21\geq -20
Combine 15x and -16x to get -x.
-x\geq -20+21
Add 21 to both sides.
-x\geq 1
Add -20 and 21 to get 1.
x\leq -1
Divide both sides by -1. Since -1 is negative, the inequality direction is changed.
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
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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