Evaluate
-1.7
Factor
-1.7
Share
Copied to clipboard
-\frac{30+1}{5}+4.5
Multiply 6 and 5 to get 30.
-\frac{31}{5}+4.5
Add 30 and 1 to get 31.
-\frac{31}{5}+\frac{9}{2}
Convert decimal number 4.5 to fraction \frac{45}{10}. Reduce the fraction \frac{45}{10} to lowest terms by extracting and canceling out 5.
-\frac{62}{10}+\frac{45}{10}
Least common multiple of 5 and 2 is 10. Convert -\frac{31}{5} and \frac{9}{2} to fractions with denominator 10.
\frac{-62+45}{10}
Since -\frac{62}{10} and \frac{45}{10} have the same denominator, add them by adding their numerators.
-\frac{17}{10}
Add -62 and 45 to get -17.
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}