Solve for a
a=\frac{20}{21}\approx 0.952380952
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5a-\frac{2}{3}-6+2a=0
Use the distributive property to multiply -2 by 3-a.
5a-\frac{2}{3}-\frac{18}{3}+2a=0
Convert 6 to fraction \frac{18}{3}.
5a+\frac{-2-18}{3}+2a=0
Since -\frac{2}{3} and \frac{18}{3} have the same denominator, subtract them by subtracting their numerators.
5a-\frac{20}{3}+2a=0
Subtract 18 from -2 to get -20.
7a-\frac{20}{3}=0
Combine 5a and 2a to get 7a.
7a=\frac{20}{3}
Add \frac{20}{3} to both sides. Anything plus zero gives itself.
a=\frac{\frac{20}{3}}{7}
Divide both sides by 7.
a=\frac{20}{3\times 7}
Express \frac{\frac{20}{3}}{7} as a single fraction.
a=\frac{20}{21}
Multiply 3 and 7 to get 21.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}