Solve for y
y=-2
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2-10y-20-\left(-3y-1\right)=-\left(y+5\right)
Use the distributive property to multiply -5 by 2y+4.
-18-10y-\left(-3y-1\right)=-\left(y+5\right)
Subtract 20 from 2 to get -18.
-18-10y-\left(-3y\right)-\left(-1\right)=-\left(y+5\right)
To find the opposite of -3y-1, find the opposite of each term.
-18-10y+3y-\left(-1\right)=-\left(y+5\right)
The opposite of -3y is 3y.
-18-10y+3y+1=-\left(y+5\right)
The opposite of -1 is 1.
-18-7y+1=-\left(y+5\right)
Combine -10y and 3y to get -7y.
-17-7y=-\left(y+5\right)
Add -18 and 1 to get -17.
-17-7y=-y-5
To find the opposite of y+5, find the opposite of each term.
-17-7y+y=-5
Add y to both sides.
-17-6y=-5
Combine -7y and y to get -6y.
-6y=-5+17
Add 17 to both sides.
-6y=12
Add -5 and 17 to get 12.
y=\frac{12}{-6}
Divide both sides by -6.
y=-2
Divide 12 by -6 to get -2.
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
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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}