Solve for x
x=2
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x-5+4\left(x+4\right)=4\left(x+6\right)-\left(x-7\right)-2\left(x+6\right)
Multiply both sides of the equation by 8, the least common multiple of 8,2,4.
x-5+4x+16=4\left(x+6\right)-\left(x-7\right)-2\left(x+6\right)
Use the distributive property to multiply 4 by x+4.
5x-5+16=4\left(x+6\right)-\left(x-7\right)-2\left(x+6\right)
Combine x and 4x to get 5x.
5x+11=4\left(x+6\right)-\left(x-7\right)-2\left(x+6\right)
Add -5 and 16 to get 11.
5x+11=4x+24-\left(x-7\right)-2\left(x+6\right)
Use the distributive property to multiply 4 by x+6.
5x+11=4x+24-x-\left(-7\right)-2\left(x+6\right)
To find the opposite of x-7, find the opposite of each term.
5x+11=4x+24-x+7-2\left(x+6\right)
The opposite of -7 is 7.
5x+11=3x+24+7-2\left(x+6\right)
Combine 4x and -x to get 3x.
5x+11=3x+31-2\left(x+6\right)
Add 24 and 7 to get 31.
5x+11=3x+31-2x-12
Use the distributive property to multiply -2 by x+6.
5x+11=x+31-12
Combine 3x and -2x to get x.
5x+11=x+19
Subtract 12 from 31 to get 19.
5x+11-x=19
Subtract x from both sides.
4x+11=19
Combine 5x and -x to get 4x.
4x=19-11
Subtract 11 from both sides.
4x=8
Subtract 11 from 19 to get 8.
x=\frac{8}{4}
Divide both sides by 4.
x=2
Divide 8 by 4 to get 2.
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
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699 * 533
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}