Solve for u
u\leq 3
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2u\leq 13-7
Subtract 7 from both sides.
2u\leq 6
Subtract 7 from 13 to get 6.
u\leq \frac{6}{2}
Divide both sides by 2. Since 2 is positive, the inequality direction remains the same.
u\leq 3
Divide 6 by 2 to get 3.
Examples
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Matrix
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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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