Solve for x
x=\frac{38}{39}\approx 0.974358974
Graph
Share
Copied to clipboard
19.5x-8.3=10.7
Multiply 3.9 and 5 to get 19.5.
19.5x=10.7+8.3
Add 8.3 to both sides.
19.5x=19
Add 10.7 and 8.3 to get 19.
x=\frac{19}{19.5}
Divide both sides by 19.5.
x=\frac{190}{195}
Expand \frac{19}{19.5} by multiplying both numerator and the denominator by 10.
x=\frac{38}{39}
Reduce the fraction \frac{190}{195} to lowest terms by extracting and canceling out 5.
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}