Solve for x
x = \frac{57}{8} = 7\frac{1}{8} = 7.125
Graph
Share
Copied to clipboard
30\left(x+1\right)+5\left(2x-3\right)=30\times 10
Multiply both sides of the equation by 30, the least common multiple of 5,6.
30x+30+5\left(2x-3\right)=30\times 10
Use the distributive property to multiply 30 by x+1.
30x+30+10x-15=30\times 10
Use the distributive property to multiply 5 by 2x-3.
40x+30-15=30\times 10
Combine 30x and 10x to get 40x.
40x+15=30\times 10
Subtract 15 from 30 to get 15.
40x+15=300
Multiply 30 and 10 to get 300.
40x=300-15
Subtract 15 from both sides.
40x=285
Subtract 15 from 300 to get 285.
x=\frac{285}{40}
Divide both sides by 40.
x=\frac{57}{8}
Reduce the fraction \frac{285}{40} to lowest terms by extracting and canceling out 5.
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}