Evaluate
86.5
Factor
\frac{173}{2} = 86\frac{1}{2} = 86.5
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17+28+13+12+8.5+8
Add 8 and 9 to get 17.
45+13+12+8.5+8
Add 17 and 28 to get 45.
58+12+8.5+8
Add 45 and 13 to get 58.
70+8.5+8
Add 58 and 12 to get 70.
78.5+8
Add 70 and 8.5 to get 78.5.
86.5
Add 78.5 and 8 to get 86.5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}