Solve for x
x=5
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3x+27=7\left(x+1\right)
Use the distributive property to multiply 3 by x+9.
3x+27=7x+7
Use the distributive property to multiply 7 by x+1.
3x+27-7x=7
Subtract 7x from both sides.
-4x+27=7
Combine 3x and -7x to get -4x.
-4x=7-27
Subtract 27 from both sides.
-4x=-20
Subtract 27 from 7 to get -20.
x=\frac{-20}{-4}
Divide both sides by -4.
x=5
Divide -20 by -4 to get 5.
Examples
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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.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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