Solve for y
y=4
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8y-40=-2y
Use the distributive property to multiply 8 by y-5.
8y-40+2y=0
Add 2y to both sides.
10y-40=0
Combine 8y and 2y to get 10y.
10y=40
Add 40 to both sides. Anything plus zero gives itself.
y=\frac{40}{10}
Divide both sides by 10.
y=4
Divide 40 by 10 to get 4.
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
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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
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Limits
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