Solve for x
x=-\frac{1}{4}=-0.25
Graph
Share
Copied to clipboard
3\left(x-5\right)=7\left(x-2\right)
Multiply both sides of the equation by 21, the least common multiple of 7,3.
3x-15=7\left(x-2\right)
Use the distributive property to multiply 3 by x-5.
3x-15=7x-14
Use the distributive property to multiply 7 by x-2.
3x-15-7x=-14
Subtract 7x from both sides.
-4x-15=-14
Combine 3x and -7x to get -4x.
-4x=-14+15
Add 15 to both sides.
-4x=1
Add -14 and 15 to get 1.
x=\frac{1}{-4}
Divide both sides by -4.
x=-\frac{1}{4}
Fraction \frac{1}{-4} can be rewritten as -\frac{1}{4} by extracting the negative sign.
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}