Evaluate
5
Factor
5
Share
Copied to clipboard
\frac{7}{\frac{1}{2}}-\frac{\frac{4\times 2+1}{2}}{\frac{1}{2}}
Add 3 and 4 to get 7.
7\times 2-\frac{\frac{4\times 2+1}{2}}{\frac{1}{2}}
Divide 7 by \frac{1}{2} by multiplying 7 by the reciprocal of \frac{1}{2}.
14-\frac{\frac{4\times 2+1}{2}}{\frac{1}{2}}
Multiply 7 and 2 to get 14.
14-\frac{\left(4\times 2+1\right)\times 2}{2}
Divide \frac{4\times 2+1}{2} by \frac{1}{2} by multiplying \frac{4\times 2+1}{2} by the reciprocal of \frac{1}{2}.
14-\left(4\times 2+1\right)
Cancel out 2 and 2.
14-4\times 2-1
To find the opposite of 4\times 2+1, find the opposite of each term.
14-8-1
Multiply -4 and 2 to get -8.
14-9
Subtract 1 from -8 to get -9.
5
Subtract 9 from 14 to get 5.
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}