Solve for x
x=25
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5\left(x+5\right)=2\times 3x
Variable x cannot be equal to -5 since division by zero is not defined. Multiply both sides of the equation by 2\left(x+5\right), the least common multiple of 2,x+5.
5x+25=2\times 3x
Use the distributive property to multiply 5 by x+5.
5x+25=6x
Multiply 2 and 3 to get 6.
5x+25-6x=0
Subtract 6x from both sides.
-x+25=0
Combine 5x and -6x to get -x.
-x=-25
Subtract 25 from both sides. Anything subtracted from zero gives its negation.
x=25
Multiply both sides by -1.
Examples
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{ 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}