\left. \begin{array} { r } { - 3,3 r + 3 y } \\ { - \frac { 2 } { 5 } a - \frac { 1 } { 2 } b + 0,25 a - 0,75 b + \frac { 3 } { 5 } b } \end{array} \right.
Evaluate
-\frac{3a}{20}-\frac{13b}{20}-\frac{33r}{10}+3y
Factor
\frac{60y-3a-13b-66r}{20}
Graph
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-3,3r+3y-\frac{3}{20}a-\frac{1}{2}b-0,75b+\frac{3}{5}b
Combine -\frac{2}{5}a and 0,25a to get -\frac{3}{20}a.
-3,3r+3y-\frac{3}{20}a-\frac{5}{4}b+\frac{3}{5}b
Combine -\frac{1}{2}b and -0,75b to get -\frac{5}{4}b.
-3,3r+3y-\frac{3}{20}a-\frac{13}{20}b
Combine -\frac{5}{4}b and \frac{3}{5}b to get -\frac{13}{20}b.
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}