Solve for x
x = \frac{13}{12} = 1\frac{1}{12} \approx 1.083333333
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3\left(x-2\right)\left(x+2\right)-\left(3x^{2}-2x\right)+4\left(1-2x\right)=-6\left(1-x\right)-15
Multiply both sides of the equation by 12, the least common multiple of 4,12,3,2.
\left(3x-6\right)\left(x+2\right)-\left(3x^{2}-2x\right)+4\left(1-2x\right)=-6\left(1-x\right)-15
Use the distributive property to multiply 3 by x-2.
3x^{2}-12-\left(3x^{2}-2x\right)+4\left(1-2x\right)=-6\left(1-x\right)-15
Use the distributive property to multiply 3x-6 by x+2 and combine like terms.
3x^{2}-12-3x^{2}+2x+4\left(1-2x\right)=-6\left(1-x\right)-15
To find the opposite of 3x^{2}-2x, find the opposite of each term.
-12+2x+4\left(1-2x\right)=-6\left(1-x\right)-15
Combine 3x^{2} and -3x^{2} to get 0.
-12+2x+4-8x=-6\left(1-x\right)-15
Use the distributive property to multiply 4 by 1-2x.
-8+2x-8x=-6\left(1-x\right)-15
Add -12 and 4 to get -8.
-8-6x=-6\left(1-x\right)-15
Combine 2x and -8x to get -6x.
-8-6x=-6+6x-15
Use the distributive property to multiply -6 by 1-x.
-8-6x=-21+6x
Subtract 15 from -6 to get -21.
-8-6x-6x=-21
Subtract 6x from both sides.
-8-12x=-21
Combine -6x and -6x to get -12x.
-12x=-21+8
Add 8 to both sides.
-12x=-13
Add -21 and 8 to get -13.
x=\frac{-13}{-12}
Divide both sides by -12.
x=\frac{13}{12}
Fraction \frac{-13}{-12} can be simplified to \frac{13}{12} by removing the negative sign from both the numerator and the denominator.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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Matrix
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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}