Solve for x
x=-\frac{1}{5}=-0.2
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-\left(1+x\right)\times 3=\left(x-1\right)\times 2
Variable x cannot be equal to any of the values -1,1 since division by zero is not defined. Multiply both sides of the equation by \left(x-1\right)\left(x+1\right), the least common multiple of 1-x,1+x.
\left(-1-x\right)\times 3=\left(x-1\right)\times 2
To find the opposite of 1+x, find the opposite of each term.
-3-3x=\left(x-1\right)\times 2
Use the distributive property to multiply -1-x by 3.
-3-3x=2x-2
Use the distributive property to multiply x-1 by 2.
-3-3x-2x=-2
Subtract 2x from both sides.
-3-5x=-2
Combine -3x and -2x to get -5x.
-5x=-2+3
Add 3 to both sides.
-5x=1
Add -2 and 3 to get 1.
x=\frac{1}{-5}
Divide both sides by -5.
x=-\frac{1}{5}
Fraction \frac{1}{-5} can be rewritten as -\frac{1}{5} by extracting the negative sign.
Examples
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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