Solve for x
x = -\frac{23}{7} = -3\frac{2}{7} \approx -3.285714286
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5\left(2+x+2\right)+2\left(x+2\right)=1
Multiply both sides of the equation by 10, the least common multiple of 2,5,10.
5\left(4+x\right)+2\left(x+2\right)=1
Add 2 and 2 to get 4.
20+5x+2\left(x+2\right)=1
Use the distributive property to multiply 5 by 4+x.
20+5x+2x+4=1
Use the distributive property to multiply 2 by x+2.
20+7x+4=1
Combine 5x and 2x to get 7x.
24+7x=1
Add 20 and 4 to get 24.
7x=1-24
Subtract 24 from both sides.
7x=-23
Subtract 24 from 1 to get -23.
x=\frac{-23}{7}
Divide both sides by 7.
x=-\frac{23}{7}
Fraction \frac{-23}{7} can be rewritten as -\frac{23}{7} by extracting the negative sign.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}