Evaluate
\frac{7}{2}+\frac{2}{y}
Expand
\frac{7}{2}+\frac{2}{y}
Graph
Quiz
Algebra
5 problems similar to:
\frac { 5 } { 5 } \quad 2 \frac { 1 } { y } + 3 \frac { 3 } { 6 } =
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1\times 2\times \frac{1}{y}+\frac{3\times 6+3}{6}
Divide 5 by 5 to get 1.
2\times \frac{1}{y}+\frac{3\times 6+3}{6}
Multiply 1 and 2 to get 2.
\frac{2}{y}+\frac{3\times 6+3}{6}
Express 2\times \frac{1}{y} as a single fraction.
\frac{2}{y}+\frac{18+3}{6}
Multiply 3 and 6 to get 18.
\frac{2}{y}+\frac{21}{6}
Add 18 and 3 to get 21.
\frac{2}{y}+\frac{7}{2}
Reduce the fraction \frac{21}{6} to lowest terms by extracting and canceling out 3.
\frac{2\times 2}{2y}+\frac{7y}{2y}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of y and 2 is 2y. Multiply \frac{2}{y} times \frac{2}{2}. Multiply \frac{7}{2} times \frac{y}{y}.
\frac{2\times 2+7y}{2y}
Since \frac{2\times 2}{2y} and \frac{7y}{2y} have the same denominator, add them by adding their numerators.
\frac{4+7y}{2y}
Do the multiplications in 2\times 2+7y.
1\times 2\times \frac{1}{y}+\frac{3\times 6+3}{6}
Divide 5 by 5 to get 1.
2\times \frac{1}{y}+\frac{3\times 6+3}{6}
Multiply 1 and 2 to get 2.
\frac{2}{y}+\frac{3\times 6+3}{6}
Express 2\times \frac{1}{y} as a single fraction.
\frac{2}{y}+\frac{18+3}{6}
Multiply 3 and 6 to get 18.
\frac{2}{y}+\frac{21}{6}
Add 18 and 3 to get 21.
\frac{2}{y}+\frac{7}{2}
Reduce the fraction \frac{21}{6} to lowest terms by extracting and canceling out 3.
\frac{2\times 2}{2y}+\frac{7y}{2y}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of y and 2 is 2y. Multiply \frac{2}{y} times \frac{2}{2}. Multiply \frac{7}{2} times \frac{y}{y}.
\frac{2\times 2+7y}{2y}
Since \frac{2\times 2}{2y} and \frac{7y}{2y} have the same denominator, add them by adding their numerators.
\frac{4+7y}{2y}
Do the multiplications in 2\times 2+7y.
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}