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Arithmetic
5 problems similar to:
4 ( 2 - 3 \frac { ( 7 ) } { 2 } ) = - 2 ( \frac { 7 } { 2 } ) - 27
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4\left(2-\frac{3\times 7}{2}\right)=-2\times \frac{7}{2}-27
Express 3\times \frac{7}{2} as a single fraction.
4\left(2-\frac{21}{2}\right)=-2\times \frac{7}{2}-27
Multiply 3 and 7 to get 21.
4\left(\frac{4}{2}-\frac{21}{2}\right)=-2\times \frac{7}{2}-27
Convert 2 to fraction \frac{4}{2}.
4\times \frac{4-21}{2}=-2\times \frac{7}{2}-27
Since \frac{4}{2} and \frac{21}{2} have the same denominator, subtract them by subtracting their numerators.
4\left(-\frac{17}{2}\right)=-2\times \frac{7}{2}-27
Subtract 21 from 4 to get -17.
\frac{4\left(-17\right)}{2}=-2\times \frac{7}{2}-27
Express 4\left(-\frac{17}{2}\right) as a single fraction.
\frac{-68}{2}=-2\times \frac{7}{2}-27
Multiply 4 and -17 to get -68.
-34=-2\times \frac{7}{2}-27
Divide -68 by 2 to get -34.
-34=-7-27
Multiply -2 times \frac{7}{2}.
-34=-34
Subtract 27 from -7 to get -34.
\text{true}
Compare -34 and -34.
Examples
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y = 3x + 4
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699 * 533
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\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}