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15x-6
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15x-6
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-5x-\left(-12\right)+2\left(10x-9\right)
To find the opposite of 5x-12, find the opposite of each term.
-5x+12+2\left(10x-9\right)
The opposite of -12 is 12.
-5x+12+20x-18
Use the distributive property to multiply 2 by 10x-9.
15x+12-18
Combine -5x and 20x to get 15x.
15x-6
Subtract 18 from 12 to get -6.
-5x-\left(-12\right)+2\left(10x-9\right)
To find the opposite of 5x-12, find the opposite of each term.
-5x+12+2\left(10x-9\right)
The opposite of -12 is 12.
-5x+12+20x-18
Use the distributive property to multiply 2 by 10x-9.
15x+12-18
Combine -5x and 20x to get 15x.
15x-6
Subtract 18 from 12 to get -6.
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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
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