Solve for x
x=-1
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10-5x-20=8x+3
Use the distributive property to multiply -5 by x+4.
-10-5x=8x+3
Subtract 20 from 10 to get -10.
-10-5x-8x=3
Subtract 8x from both sides.
-10-13x=3
Combine -5x and -8x to get -13x.
-13x=3+10
Add 10 to both sides.
-13x=13
Add 3 and 10 to get 13.
x=\frac{13}{-13}
Divide both sides by -13.
x=-1
Divide 13 by -13 to get -1.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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}