Solve for x
x = -\frac{14}{9} = -1\frac{5}{9} \approx -1.555555556
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Linear Equation
5 problems similar to:
- \frac { 5 } { 2 } = \frac { 3 } { 4 } x - \frac { 4 } { 3 }
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\frac{3}{4}x-\frac{4}{3}=-\frac{5}{2}
Swap sides so that all variable terms are on the left hand side.
\frac{3}{4}x=-\frac{5}{2}+\frac{4}{3}
Add \frac{4}{3} to both sides.
\frac{3}{4}x=-\frac{15}{6}+\frac{8}{6}
Least common multiple of 2 and 3 is 6. Convert -\frac{5}{2} and \frac{4}{3} to fractions with denominator 6.
\frac{3}{4}x=\frac{-15+8}{6}
Since -\frac{15}{6} and \frac{8}{6} have the same denominator, add them by adding their numerators.
\frac{3}{4}x=-\frac{7}{6}
Add -15 and 8 to get -7.
x=-\frac{7}{6}\times \frac{4}{3}
Multiply both sides by \frac{4}{3}, the reciprocal of \frac{3}{4}.
x=\frac{-7\times 4}{6\times 3}
Multiply -\frac{7}{6} times \frac{4}{3} by multiplying numerator times numerator and denominator times denominator.
x=\frac{-28}{18}
Do the multiplications in the fraction \frac{-7\times 4}{6\times 3}.
x=-\frac{14}{9}
Reduce the fraction \frac{-28}{18} to lowest terms by extracting and canceling out 2.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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}