Solve for x
x=\frac{3}{7}\approx 0.428571429
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-\left(x-3\right)=2\times 3x
Variable x cannot be equal to -1 since division by zero is not defined. Multiply both sides of the equation by 2\left(x+1\right), the least common multiple of 2x+2,x+1.
-x+3=2\times 3x
To find the opposite of x-3, find the opposite of each term.
-x+3=6x
Multiply 2 and 3 to get 6.
-x+3-6x=0
Subtract 6x from both sides.
-7x+3=0
Combine -x and -6x to get -7x.
-7x=-3
Subtract 3 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-3}{-7}
Divide both sides by -7.
x=\frac{3}{7}
Fraction \frac{-3}{-7} can be simplified to \frac{3}{7} by removing the negative sign from both the numerator and the denominator.
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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