3 \cdot ( 2 x + 5 y + ( 5 x ) =
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21x+15y
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21x+15y
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3\left(7x+5y\right)
Combine 2x and 5x to get 7x.
21x+15y
Use the distributive property to multiply 3 by 7x+5y.
3\left(7x+5y\right)
Combine 2x and 5x to get 7x.
21x+15y
Use the distributive property to multiply 3 by 7x+5y.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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
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