Solve for x
x = \frac{10}{7} = 1\frac{3}{7} \approx 1.428571429
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Linear Equation
5 problems similar to:
\frac { - 4 } { ( 2 - 7 x ) } = 3 - 5 ( \frac { 1 } { 2 } )
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-2\left(-4\right)=2\left(7x-2\right)\times 3-5\times \frac{1}{2}\times 2\left(7x-2\right)
Variable x cannot be equal to \frac{2}{7} since division by zero is not defined. Multiply both sides of the equation by 2\left(7x-2\right), the least common multiple of 2-7x,2.
8=2\left(7x-2\right)\times 3-5\times \frac{1}{2}\times 2\left(7x-2\right)
Multiply -2 and -4 to get 8.
8=6\left(7x-2\right)-5\times \frac{1}{2}\times 2\left(7x-2\right)
Multiply 2 and 3 to get 6.
8=42x-12-5\times \frac{1}{2}\times 2\left(7x-2\right)
Use the distributive property to multiply 6 by 7x-2.
8=42x-12-\frac{5}{2}\times 2\left(7x-2\right)
Multiply 5 and \frac{1}{2} to get \frac{5}{2}.
8=42x-12-5\left(7x-2\right)
Multiply \frac{5}{2} and 2 to get 5.
8=42x-12-35x+10
Use the distributive property to multiply -5 by 7x-2.
8=7x-12+10
Combine 42x and -35x to get 7x.
8=7x-2
Add -12 and 10 to get -2.
7x-2=8
Swap sides so that all variable terms are on the left hand side.
7x=8+2
Add 2 to both sides.
7x=10
Add 8 and 2 to get 10.
x=\frac{10}{7}
Divide both sides by 7.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
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Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}