Solve for v
v=-40
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4v-40=5v
Multiply both sides of the equation by 20, the least common multiple of 5,4.
4v-40-5v=0
Subtract 5v from both sides.
-v-40=0
Combine 4v and -5v to get -v.
-v=40
Add 40 to both sides. Anything plus zero gives itself.
v=-40
Multiply both sides by -1.
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
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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