Solve for v
v=0.4
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4.8-2v=4
Multiply 3 and 1.6 to get 4.8.
-2v=4-4.8
Subtract 4.8 from both sides.
-2v=-0.8
Subtract 4.8 from 4 to get -0.8.
v=\frac{-0.8}{-2}
Divide both sides by -2.
v=\frac{-8}{-20}
Expand \frac{-0.8}{-2} by multiplying both numerator and the denominator by 10.
v=\frac{2}{5}
Reduce the fraction \frac{-8}{-20} to lowest terms by extracting and canceling out -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
\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
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Limits
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