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-2=-\frac{25}{7}+49
Multiply 7 and 7 to get 49.
-2=-\frac{25}{7}+\frac{343}{7}
Convert 49 to fraction \frac{343}{7}.
-2=\frac{-25+343}{7}
Since -\frac{25}{7} and \frac{343}{7} have the same denominator, add them by adding their numerators.
-2=\frac{318}{7}
Add -25 and 343 to get 318.
-\frac{14}{7}=\frac{318}{7}
Convert -2 to fraction -\frac{14}{7}.
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Compare -\frac{14}{7} and \frac{318}{7}.
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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}