Solve for x
x=4
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0.6=\frac{3\times 10^{-3}x}{2\times 10^{-2}}
Cancel out 19 in both numerator and denominator.
0.6=\frac{3x}{2\times 10^{1}}
To divide powers of the same base, subtract the numerator's exponent from the denominator's exponent.
0.6=\frac{3x}{2\times 10}
Calculate 10 to the power of 1 and get 10.
0.6=\frac{3x}{20}
Multiply 2 and 10 to get 20.
\frac{3x}{20}=0.6
Swap sides so that all variable terms are on the left hand side.
3x=0.6\times 20
Multiply both sides by 20.
3x=12
Multiply 0.6 and 20 to get 12.
x=\frac{12}{3}
Divide both sides by 3.
x=4
Divide 12 by 3 to get 4.
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}