Solve for x
x = \frac{53}{7} = 7\frac{4}{7} \approx 7.571428571
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20\left(x-2\right)-12\left(x-4\right)=15\left(x-3\right)
Multiply both sides of the equation by 60, the least common multiple of 3,5,4.
20x-40-12\left(x-4\right)=15\left(x-3\right)
Use the distributive property to multiply 20 by x-2.
20x-40-12x+48=15\left(x-3\right)
Use the distributive property to multiply -12 by x-4.
8x-40+48=15\left(x-3\right)
Combine 20x and -12x to get 8x.
8x+8=15\left(x-3\right)
Add -40 and 48 to get 8.
8x+8=15x-45
Use the distributive property to multiply 15 by x-3.
8x+8-15x=-45
Subtract 15x from both sides.
-7x+8=-45
Combine 8x and -15x to get -7x.
-7x=-45-8
Subtract 8 from both sides.
-7x=-53
Subtract 8 from -45 to get -53.
x=\frac{-53}{-7}
Divide both sides by -7.
x=\frac{53}{7}
Fraction \frac{-53}{-7} can be simplified to \frac{53}{7} by removing the negative sign from both the numerator and the denominator.
Examples
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{ 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}