Solve for x
x=-\frac{45}{68}\approx -0.661764706
Graph
Share
Copied to clipboard
20\times 2\left(5x-3\right)-10\times 5\left(x-6\right)=15\times 3\left(2x+1\right)-12\times 4\times 3x
Multiply both sides of the equation by 60, the least common multiple of 3,6,4,5.
40\left(5x-3\right)-10\times 5\left(x-6\right)=15\times 3\left(2x+1\right)-12\times 4\times 3x
Multiply 20 and 2 to get 40.
200x-120-10\times 5\left(x-6\right)=15\times 3\left(2x+1\right)-12\times 4\times 3x
Use the distributive property to multiply 40 by 5x-3.
200x-120-50\left(x-6\right)=15\times 3\left(2x+1\right)-12\times 4\times 3x
Multiply -10 and 5 to get -50.
200x-120-50x+300=15\times 3\left(2x+1\right)-12\times 4\times 3x
Use the distributive property to multiply -50 by x-6.
150x-120+300=15\times 3\left(2x+1\right)-12\times 4\times 3x
Combine 200x and -50x to get 150x.
150x+180=15\times 3\left(2x+1\right)-12\times 4\times 3x
Add -120 and 300 to get 180.
150x+180=45\left(2x+1\right)-48\times 3x
Multiply 15 and 3 to get 45. Multiply -12 and 4 to get -48.
150x+180=90x+45-48\times 3x
Use the distributive property to multiply 45 by 2x+1.
150x+180=90x+45-144x
Multiply -48 and 3 to get -144.
150x+180=-54x+45
Combine 90x and -144x to get -54x.
150x+180+54x=45
Add 54x to both sides.
204x+180=45
Combine 150x and 54x to get 204x.
204x=45-180
Subtract 180 from both sides.
204x=-135
Subtract 180 from 45 to get -135.
x=\frac{-135}{204}
Divide both sides by 204.
x=-\frac{45}{68}
Reduce the fraction \frac{-135}{204} to lowest terms by extracting and canceling out 3.
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}