Solve for x
x=-45
Graph
Share
Copied to clipboard
\left(x+15\right)\times 15\times 1.5=x\times 15
Variable x cannot be equal to any of the values -15,0 since division by zero is not defined. Multiply both sides of the equation by x\left(x+15\right), the least common multiple of x,x+15.
\left(x+15\right)\times 22.5=x\times 15
Multiply 15 and 1.5 to get 22.5.
22.5x+337.5=x\times 15
Use the distributive property to multiply x+15 by 22.5.
22.5x+337.5-x\times 15=0
Subtract x\times 15 from both sides.
7.5x+337.5=0
Combine 22.5x and -x\times 15 to get 7.5x.
7.5x=-337.5
Subtract 337.5 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-337.5}{7.5}
Divide both sides by 7.5.
x=\frac{-3375}{75}
Expand \frac{-337.5}{7.5} by multiplying both numerator and the denominator by 10.
x=-45
Divide -3375 by 75 to get -45.
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}