Solve for x
x = \frac{121}{3} = 40\frac{1}{3} \approx 40.333333333
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5\left(121-2x\right)=x\times 5
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 5x, the least common multiple of x,5.
605-10x=x\times 5
Use the distributive property to multiply 5 by 121-2x.
605-10x-x\times 5=0
Subtract x\times 5 from both sides.
605-15x=0
Combine -10x and -x\times 5 to get -15x.
-15x=-605
Subtract 605 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-605}{-15}
Divide both sides by -15.
x=\frac{121}{3}
Reduce the fraction \frac{-605}{-15} to lowest terms by extracting and canceling out -5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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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}