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3-19m
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3-19m
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3\left(2-5m\right)-\left(3+4m\right)
Divide each term of 12m+9 by 3 to get 3+4m.
3\left(2-5m\right)-3-4m
To find the opposite of 3+4m, find the opposite of each term.
6-15m-3-4m
Use the distributive property to multiply 3 by 2-5m.
3-15m-4m
Subtract 3 from 6 to get 3.
3-19m
Combine -15m and -4m to get -19m.
3\left(2-5m\right)-\left(3+4m\right)
Divide each term of 12m+9 by 3 to get 3+4m.
3\left(2-5m\right)-3-4m
To find the opposite of 3+4m, find the opposite of each term.
6-15m-3-4m
Use the distributive property to multiply 3 by 2-5m.
3-15m-4m
Subtract 3 from 6 to get 3.
3-19m
Combine -15m and -4m to get -19m.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}