Solve for y
y = -\frac{12}{5} = -2\frac{2}{5} = -2.4
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5y+20=8
Multiply both sides of the equation by 20, the least common multiple of 4,5.
5y=8-20
Subtract 20 from both sides.
5y=-12
Subtract 20 from 8 to get -12.
y=\frac{-12}{5}
Divide both sides by 5.
y=-\frac{12}{5}
Fraction \frac{-12}{5} can be rewritten as -\frac{12}{5} by extracting the negative sign.
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
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Arithmetic
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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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