Solve for x
x = -\frac{3}{2} = -1\frac{1}{2} = -1.5
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-2x-\left(-1\right)=4
To find the opposite of 2x-1, find the opposite of each term.
-2x+1=4
The opposite of -1 is 1.
-2x=4-1
Subtract 1 from both sides.
-2x=3
Subtract 1 from 4 to get 3.
x=\frac{3}{-2}
Divide both sides by -2.
x=-\frac{3}{2}
Fraction \frac{3}{-2} can be rewritten as -\frac{3}{2} by extracting the negative sign.
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.
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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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