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2x-3y-11
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2x-3y-11
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3x-5y-4-x-\left(-2y\right)-7
To find the opposite of x-2y+7, find the opposite of each term.
3x-5y-4-x+2y-7
The opposite of -2y is 2y.
2x-5y-4+2y-7
Combine 3x and -x to get 2x.
2x-3y-4-7
Combine -5y and 2y to get -3y.
2x-3y-11
Subtract 7 from -4 to get -11.
3x-5y-4-x-\left(-2y\right)-7
To find the opposite of x-2y+7, find the opposite of each term.
3x-5y-4-x+2y-7
The opposite of -2y is 2y.
2x-5y-4+2y-7
Combine 3x and -x to get 2x.
2x-3y-4-7
Combine -5y and 2y to get -3y.
2x-3y-11
Subtract 7 from -4 to get -11.
Examples
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y = 3x + 4
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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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