Solve for x
x = \frac{9}{4} = 2\frac{1}{4} = 2.25
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Quiz
Linear Equation
5 problems similar to:
3- \frac{ 3x }{ 2 } = \frac{ 5 }{ 8 } - \frac{ 4x-3 }{ 6 }
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72-12\times 3x=15-4\left(4x-3\right)
Multiply both sides of the equation by 24, the least common multiple of 2,8,6.
72-36x=15-4\left(4x-3\right)
Multiply -12 and 3 to get -36.
72-36x=15-16x+12
Use the distributive property to multiply -4 by 4x-3.
72-36x=27-16x
Add 15 and 12 to get 27.
72-36x+16x=27
Add 16x to both sides.
72-20x=27
Combine -36x and 16x to get -20x.
-20x=27-72
Subtract 72 from both sides.
-20x=-45
Subtract 72 from 27 to get -45.
x=\frac{-45}{-20}
Divide both sides by -20.
x=\frac{9}{4}
Reduce the fraction \frac{-45}{-20} 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}