Solve for x
x = \frac{17}{8} = 2\frac{1}{8} = 2.125
Graph
Share
Copied to clipboard
2\left(x+3\right)-\left(2x+5\right)=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Variable x cannot be equal to 2 since division by zero is not defined. Multiply both sides of the equation by 2\left(x-2\right), the least common multiple of x-2,2x-4,2.
2x+6-\left(2x+5\right)=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Use the distributive property to multiply 2 by x+3.
2x+6-2x-5=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
To find the opposite of 2x+5, find the opposite of each term.
6-5=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Combine 2x and -2x to get 0.
1=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Subtract 5 from 6 to get 1.
1=6\left(x-2\right)+\left(x-2\right)\times 2
Multiply 2 and 3 to get 6.
1=6x-12+\left(x-2\right)\times 2
Use the distributive property to multiply 6 by x-2.
1=6x-12+2x-4
Use the distributive property to multiply x-2 by 2.
1=8x-12-4
Combine 6x and 2x to get 8x.
1=8x-16
Subtract 4 from -12 to get -16.
8x-16=1
Swap sides so that all variable terms are on the left hand side.
8x=1+16
Add 16 to both sides.
8x=17
Add 1 and 16 to get 17.
x=\frac{17}{8}
Divide both sides by 8.
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}