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4y-25x
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4y-25x
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17x-2y-42x-\left(-6y\right)
To find the opposite of 42x-6y, find the opposite of each term.
17x-2y-42x+6y
The opposite of -6y is 6y.
-25x-2y+6y
Combine 17x and -42x to get -25x.
-25x+4y
Combine -2y and 6y to get 4y.
17x-2y-42x-\left(-6y\right)
To find the opposite of 42x-6y, find the opposite of each term.
17x-2y-42x+6y
The opposite of -6y is 6y.
-25x-2y+6y
Combine 17x and -42x to get -25x.
-25x+4y
Combine -2y and 6y to get 4y.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}