Solve for x
x=\frac{1}{5}=0.2
Graph
Share
Copied to clipboard
3\left(x-1\right)-4\left(2x+5\right)=2\left(5x-7\right)-12
Multiply both sides of the equation by 12, the least common multiple of 4,3,6.
3x-3-4\left(2x+5\right)=2\left(5x-7\right)-12
Use the distributive property to multiply 3 by x-1.
3x-3-8x-20=2\left(5x-7\right)-12
Use the distributive property to multiply -4 by 2x+5.
-5x-3-20=2\left(5x-7\right)-12
Combine 3x and -8x to get -5x.
-5x-23=2\left(5x-7\right)-12
Subtract 20 from -3 to get -23.
-5x-23=10x-14-12
Use the distributive property to multiply 2 by 5x-7.
-5x-23=10x-26
Subtract 12 from -14 to get -26.
-5x-23-10x=-26
Subtract 10x from both sides.
-15x-23=-26
Combine -5x and -10x to get -15x.
-15x=-26+23
Add 23 to both sides.
-15x=-3
Add -26 and 23 to get -3.
x=\frac{-3}{-15}
Divide both sides by -15.
x=\frac{1}{5}
Reduce the fraction \frac{-3}{-15} to lowest terms by extracting and canceling out -3.
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}