Solve for y
y=4
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3y+4-5y=-4
Subtract 5y from both sides.
-2y+4=-4
Combine 3y and -5y to get -2y.
-2y=-4-4
Subtract 4 from both sides.
-2y=-8
Subtract 4 from -4 to get -8.
y=\frac{-8}{-2}
Divide both sides by -2.
y=4
Divide -8 by -2 to get 4.
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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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
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