Solve for x
x = \frac{147}{17} = 8\frac{11}{17} \approx 8.647058824
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4\times 3\left(x-1\right)-5\left(x+1\right)=20x+40-10\times 3\left(x-3\right)
Multiply both sides of the equation by 20, the least common multiple of 5,4,2.
12\left(x-1\right)-5\left(x+1\right)=20x+40-10\times 3\left(x-3\right)
Multiply 4 and 3 to get 12.
12x-12-5\left(x+1\right)=20x+40-10\times 3\left(x-3\right)
Use the distributive property to multiply 12 by x-1.
12x-12-5x-5=20x+40-10\times 3\left(x-3\right)
Use the distributive property to multiply -5 by x+1.
7x-12-5=20x+40-10\times 3\left(x-3\right)
Combine 12x and -5x to get 7x.
7x-17=20x+40-10\times 3\left(x-3\right)
Subtract 5 from -12 to get -17.
7x-17=20x+40-30\left(x-3\right)
Multiply -10 and 3 to get -30.
7x-17=20x+40-30x+90
Use the distributive property to multiply -30 by x-3.
7x-17=-10x+40+90
Combine 20x and -30x to get -10x.
7x-17=-10x+130
Add 40 and 90 to get 130.
7x-17+10x=130
Add 10x to both sides.
17x-17=130
Combine 7x and 10x to get 17x.
17x=130+17
Add 17 to both sides.
17x=147
Add 130 and 17 to get 147.
x=\frac{147}{17}
Divide both sides by 17.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}