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-9x-42
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-3x-\left(-9\right)-3x+9-3x-60
To find the opposite of 3x-9, find the opposite of each term.
-3x+9-3x+9-3x-60
The opposite of -9 is 9.
-6x+9+9-3x-60
Combine -3x and -3x to get -6x.
-6x+18-3x-60
Add 9 and 9 to get 18.
-9x+18-60
Combine -6x and -3x to get -9x.
-9x-42
Subtract 60 from 18 to get -42.
-3x-\left(-9\right)-3x+9-3x-60
To find the opposite of 3x-9, find the opposite of each term.
-3x+9-3x+9-3x-60
The opposite of -9 is 9.
-6x+9+9-3x-60
Combine -3x and -3x to get -6x.
-6x+18-3x-60
Add 9 and 9 to get 18.
-9x+18-60
Combine -6x and -3x to get -9x.
-9x-42
Subtract 60 from 18 to get -42.
Examples
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{ 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}