Evaluate
42
Factor
2\times 3\times 7
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22.4+22.9-1-\frac{23}{10}
Subtract 10.7 from 33.1 to get 22.4.
45.3-1-\frac{23}{10}
Add 22.4 and 22.9 to get 45.3.
44.3-\frac{23}{10}
Subtract 1 from 45.3 to get 44.3.
\frac{443}{10}-\frac{23}{10}
Convert decimal number 44.3 to fraction \frac{443}{10}.
\frac{443-23}{10}
Since \frac{443}{10} and \frac{23}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{420}{10}
Subtract 23 from 443 to get 420.
42
Divide 420 by 10 to get 42.
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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