1+2+3+3+4+4+4+5+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Evaluate
130
Factor
2\times 5\times 13
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3+3+3+4+4+4+5+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 1 and 2 to get 3.
6+3+4+4+4+5+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 3 and 3 to get 6.
9+4+4+4+5+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 6 and 3 to get 9.
13+4+4+5+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 9 and 4 to get 13.
17+4+5+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 13 and 4 to get 17.
21+5+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 17 and 4 to get 21.
26+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 21 and 5 to get 26.
31+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 26 and 5 to get 31.
36+5+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 31 and 5 to get 36.
41+5+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 36 and 5 to get 41.
46+5+6+6+6+6+6+6+7+7+7+7+7+8
Add 41 and 5 to get 46.
51+6+6+6+6+6+6+7+7+7+7+7+8
Add 46 and 5 to get 51.
57+6+6+6+6+6+7+7+7+7+7+8
Add 51 and 6 to get 57.
63+6+6+6+6+7+7+7+7+7+8
Add 57 and 6 to get 63.
69+6+6+6+7+7+7+7+7+8
Add 63 and 6 to get 69.
75+6+6+7+7+7+7+7+8
Add 69 and 6 to get 75.
81+6+7+7+7+7+7+8
Add 75 and 6 to get 81.
87+7+7+7+7+7+8
Add 81 and 6 to get 87.
94+7+7+7+7+8
Add 87 and 7 to get 94.
101+7+7+7+8
Add 94 and 7 to get 101.
108+7+7+8
Add 101 and 7 to get 108.
115+7+8
Add 108 and 7 to get 115.
122+8
Add 115 and 7 to get 122.
130
Add 122 and 8 to get 130.
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}