Solve for q
q=\frac{1}{9}\approx 0.111111111
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4+8q=\frac{4}{9}+\frac{36}{9}+4q
Convert 4 to fraction \frac{36}{9}.
4+8q=\frac{4+36}{9}+4q
Since \frac{4}{9} and \frac{36}{9} have the same denominator, add them by adding their numerators.
4+8q=\frac{40}{9}+4q
Add 4 and 36 to get 40.
4+8q-4q=\frac{40}{9}
Subtract 4q from both sides.
4+4q=\frac{40}{9}
Combine 8q and -4q to get 4q.
4q=\frac{40}{9}-4
Subtract 4 from both sides.
4q=\frac{40}{9}-\frac{36}{9}
Convert 4 to fraction \frac{36}{9}.
4q=\frac{40-36}{9}
Since \frac{40}{9} and \frac{36}{9} have the same denominator, subtract them by subtracting their numerators.
4q=\frac{4}{9}
Subtract 36 from 40 to get 4.
q=\frac{\frac{4}{9}}{4}
Divide both sides by 4.
q=\frac{4}{9\times 4}
Express \frac{\frac{4}{9}}{4} as a single fraction.
q=\frac{1}{9}
Cancel out 4 in both numerator and denominator.
Examples
Quadratic equation
{ 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}