Solve for y
y=13
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y≔13
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y=-2-9-12\left(-3\right)-12
Calculate 3 to the power of 2 and get 9.
y=-11-12\left(-3\right)-12
Subtract 9 from -2 to get -11.
y=-11-\left(-36\right)-12
Multiply 12 and -3 to get -36.
y=-11+36-12
The opposite of -36 is 36.
y=25-12
Add -11 and 36 to get 25.
y=13
Subtract 12 from 25 to get 13.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
Arithmetic
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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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