Solve for x
x=-\frac{1}{7}\approx -0.142857143
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2x-6+5x+7=0
Use the distributive property to multiply 2 by x-3.
7x-6+7=0
Combine 2x and 5x to get 7x.
7x+1=0
Add -6 and 7 to get 1.
7x=-1
Subtract 1 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-1}{7}
Divide both sides by 7.
x=-\frac{1}{7}
Fraction \frac{-1}{7} can be rewritten as -\frac{1}{7} by extracting the negative sign.
Examples
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Linear equation
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.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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