Evaluate
49.9
Factor
\frac{499}{2 \cdot 5} = 49\frac{9}{10} = 49.9
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45-\left(-0.1\left(50-1\right)\right)
Multiply 1 and 45 to get 45.
45-\left(-0.1\times 49\right)
Subtract 1 from 50 to get 49.
45-\left(-4.9\right)
Multiply -0.1 and 49 to get -4.9.
45+4.9
The opposite of -4.9 is 4.9.
49.9
Add 45 and 4.9 to get 49.9.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}