Solve for x
x=\frac{2}{7}\approx 0.285714286
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2x+2-9x=0
Subtract 9x from both sides.
-7x+2=0
Combine 2x and -9x to get -7x.
-7x=-2
Subtract 2 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-2}{-7}
Divide both sides by -7.
x=\frac{2}{7}
Fraction \frac{-2}{-7} can be simplified to \frac{2}{7} by removing the negative sign from both the numerator and the denominator.
Examples
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
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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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