Solve for x
x>\frac{19}{2}
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x+1>\frac{21}{2}
Divide both sides by 2. Since 2 is positive, the inequality direction remains the same.
x>\frac{21}{2}-1
Subtract 1 from both sides.
x>\frac{21}{2}-\frac{2}{2}
Convert 1 to fraction \frac{2}{2}.
x>\frac{21-2}{2}
Since \frac{21}{2} and \frac{2}{2} have the same denominator, subtract them by subtracting their numerators.
x>\frac{19}{2}
Subtract 2 from 21 to get 19.
Examples
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y = 3x + 4
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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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