Solve for x
x = \frac{5}{2} = 2\frac{1}{2} = 2.5
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13-4x+4+1=12+2\left(-2\right)
Use the distributive property to multiply -4 by x-1.
17-4x+1=12+2\left(-2\right)
Add 13 and 4 to get 17.
18-4x=12+2\left(-2\right)
Add 17 and 1 to get 18.
18-4x=12-4
Multiply 2 and -2 to get -4.
18-4x=8
Subtract 4 from 12 to get 8.
-4x=8-18
Subtract 18 from both sides.
-4x=-10
Subtract 18 from 8 to get -10.
x=\frac{-10}{-4}
Divide both sides by -4.
x=\frac{5}{2}
Reduce the fraction \frac{-10}{-4} to lowest terms by extracting and canceling out -2.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
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}