Solve for y
y=4
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y=\frac{2}{5}\times 10
Multiply both sides by 10.
y=\frac{2\times 10}{5}
Express \frac{2}{5}\times 10 as a single fraction.
y=\frac{20}{5}
Multiply 2 and 10 to get 20.
y=4
Divide 20 by 5 to get 4.
Examples
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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