Evaluate
-2x-6.5
Expand
-2x-6.5
Graph
Share
Copied to clipboard
-3.5-\left(-x\right)-11-\left(3x-8\right)
To find the opposite of 3.5-x, find the opposite of each term.
-3.5+x-11-\left(3x-8\right)
The opposite of -x is x.
-14.5+x-\left(3x-8\right)
Subtract 11 from -3.5 to get -14.5.
-14.5+x-3x-\left(-8\right)
To find the opposite of 3x-8, find the opposite of each term.
-14.5+x-3x+8
The opposite of -8 is 8.
-14.5-2x+8
Combine x and -3x to get -2x.
-6.5-2x
Add -14.5 and 8 to get -6.5.
-3.5-\left(-x\right)-11-\left(3x-8\right)
To find the opposite of 3.5-x, find the opposite of each term.
-3.5+x-11-\left(3x-8\right)
The opposite of -x is x.
-14.5+x-\left(3x-8\right)
Subtract 11 from -3.5 to get -14.5.
-14.5+x-3x-\left(-8\right)
To find the opposite of 3x-8, find the opposite of each term.
-14.5+x-3x+8
The opposite of -8 is 8.
-14.5-2x+8
Combine x and -3x to get -2x.
-6.5-2x
Add -14.5 and 8 to get -6.5.
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}