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7215+5798-13=13\left(555+446-1\right)
Multiply 13 and 555 to get 7215. Multiply 13 and 446 to get 5798.
13013-13=13\left(555+446-1\right)
Add 7215 and 5798 to get 13013.
13000=13\left(555+446-1\right)
Subtract 13 from 13013 to get 13000.
13000=13\left(1001-1\right)
Add 555 and 446 to get 1001.
13000=13\times 1000
Subtract 1 from 1001 to get 1000.
13000=13000
Multiply 13 and 1000 to get 13000.
\text{true}
Compare 13000 and 13000.
Examples
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{ 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}