Solve for x
x=1
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3\left(7x+9\right)-4\left(7-x\right)-24x=12\left(3-x\right)-24\left(\frac{7-x}{3}-\frac{3+x}{4}\right)
Multiply both sides of the equation by 24, the least common multiple of 8,6,2,3,4.
21x+27-4\left(7-x\right)-24x=12\left(3-x\right)-24\left(\frac{7-x}{3}-\frac{3+x}{4}\right)
Use the distributive property to multiply 3 by 7x+9.
21x+27-28+4x-24x=12\left(3-x\right)-24\left(\frac{7-x}{3}-\frac{3+x}{4}\right)
Use the distributive property to multiply -4 by 7-x.
21x-1+4x-24x=12\left(3-x\right)-24\left(\frac{7-x}{3}-\frac{3+x}{4}\right)
Subtract 28 from 27 to get -1.
25x-1-24x=12\left(3-x\right)-24\left(\frac{7-x}{3}-\frac{3+x}{4}\right)
Combine 21x and 4x to get 25x.
x-1=12\left(3-x\right)-24\left(\frac{7-x}{3}-\frac{3+x}{4}\right)
Combine 25x and -24x to get x.
x-1=36-12x-24\left(\frac{7-x}{3}-\frac{3+x}{4}\right)
Use the distributive property to multiply 12 by 3-x.
x-1=36-12x-24\left(\frac{4\left(7-x\right)}{12}-\frac{3\left(3+x\right)}{12}\right)
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 3 and 4 is 12. Multiply \frac{7-x}{3} times \frac{4}{4}. Multiply \frac{3+x}{4} times \frac{3}{3}.
x-1=36-12x-24\times \frac{4\left(7-x\right)-3\left(3+x\right)}{12}
Since \frac{4\left(7-x\right)}{12} and \frac{3\left(3+x\right)}{12} have the same denominator, subtract them by subtracting their numerators.
x-1=36-12x-24\times \frac{28-4x-9-3x}{12}
Do the multiplications in 4\left(7-x\right)-3\left(3+x\right).
x-1=36-12x-24\times \frac{19-7x}{12}
Combine like terms in 28-4x-9-3x.
x-1=36-12x-2\left(19-7x\right)
Cancel out 12, the greatest common factor in 24 and 12.
x-1=36-12x-38+14x
Use the distributive property to multiply -2 by 19-7x.
x-1=-2-12x+14x
Subtract 38 from 36 to get -2.
x-1=-2+2x
Combine -12x and 14x to get 2x.
x-1-2x=-2
Subtract 2x from both sides.
-x-1=-2
Combine x and -2x to get -x.
-x=-2+1
Add 1 to both sides.
-x=-1
Add -2 and 1 to get -1.
x=1
Multiply both sides by -1.
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}