Evaluate
x+20y-2
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x+20y-2
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\frac{4+3}{4}x+5y-\frac{1}{4}x+3\times 5y-2-\frac{1}{2}x
Multiply 1 and 4 to get 4.
\frac{7}{4}x+5y-\frac{1}{4}x+3\times 5y-2-\frac{1}{2}x
Add 4 and 3 to get 7.
\frac{3}{2}x+5y+3\times 5y-2-\frac{1}{2}x
Combine \frac{7}{4}x and -\frac{1}{4}x to get \frac{3}{2}x.
\frac{3}{2}x+5y+15y-2-\frac{1}{2}x
Multiply 3 and 5 to get 15.
\frac{3}{2}x+20y-2-\frac{1}{2}x
Combine 5y and 15y to get 20y.
x+20y-2
Combine \frac{3}{2}x and -\frac{1}{2}x to get x.
\frac{4+3}{4}x+5y-\frac{1}{4}x+3\times 5y-2-\frac{1}{2}x
Multiply 1 and 4 to get 4.
\frac{7}{4}x+5y-\frac{1}{4}x+3\times 5y-2-\frac{1}{2}x
Add 4 and 3 to get 7.
\frac{3}{2}x+5y+3\times 5y-2-\frac{1}{2}x
Combine \frac{7}{4}x and -\frac{1}{4}x to get \frac{3}{2}x.
\frac{3}{2}x+5y+15y-2-\frac{1}{2}x
Multiply 3 and 5 to get 15.
\frac{3}{2}x+20y-2-\frac{1}{2}x
Combine 5y and 15y to get 20y.
x+20y-2
Combine \frac{3}{2}x and -\frac{1}{2}x to get x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
Arithmetic
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Matrix
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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}