Solve for x
x>45
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2x-1>89
Add 27 and 62 to get 89.
2x>89+1
Add 1 to both sides.
2x>90
Add 89 and 1 to get 90.
x>\frac{90}{2}
Divide both sides by 2. Since 2 is positive, the inequality direction remains the same.
x>45
Divide 90 by 2 to get 45.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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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