Solve for x
x=\frac{5}{8}=0.625
Graph
Share
Copied to clipboard
3\left(x+15\right)=15-5\left(x-7\right)
Multiply both sides of the equation by 15, the least common multiple of 5,3.
3x+45=15-5\left(x-7\right)
Use the distributive property to multiply 3 by x+15.
3x+45=15-5x+35
Use the distributive property to multiply -5 by x-7.
3x+45=50-5x
Add 15 and 35 to get 50.
3x+45+5x=50
Add 5x to both sides.
8x+45=50
Combine 3x and 5x to get 8x.
8x=50-45
Subtract 45 from both sides.
8x=5
Subtract 45 from 50 to get 5.
x=\frac{5}{8}
Divide both sides by 8.
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}