Solve for x
x = \frac{6}{5} = 1\frac{1}{5} = 1.2
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0=-\frac{5}{4}\left(x-\frac{6}{5}\right)
Fraction \frac{-5}{4} can be rewritten as -\frac{5}{4} by extracting the negative sign.
0=-\frac{5}{4}x-\frac{5}{4}\left(-\frac{6}{5}\right)
Use the distributive property to multiply -\frac{5}{4} by x-\frac{6}{5}.
0=-\frac{5}{4}x+\frac{-5\left(-6\right)}{4\times 5}
Multiply -\frac{5}{4} times -\frac{6}{5} by multiplying numerator times numerator and denominator times denominator.
0=-\frac{5}{4}x+\frac{30}{20}
Do the multiplications in the fraction \frac{-5\left(-6\right)}{4\times 5}.
0=-\frac{5}{4}x+\frac{3}{2}
Reduce the fraction \frac{30}{20} to lowest terms by extracting and canceling out 10.
-\frac{5}{4}x+\frac{3}{2}=0
Swap sides so that all variable terms are on the left hand side.
-\frac{5}{4}x=-\frac{3}{2}
Subtract \frac{3}{2} from both sides. Anything subtracted from zero gives its negation.
x=-\frac{3}{2}\left(-\frac{4}{5}\right)
Multiply both sides by -\frac{4}{5}, the reciprocal of -\frac{5}{4}.
x=\frac{-3\left(-4\right)}{2\times 5}
Multiply -\frac{3}{2} times -\frac{4}{5} by multiplying numerator times numerator and denominator times denominator.
x=\frac{12}{10}
Do the multiplications in the fraction \frac{-3\left(-4\right)}{2\times 5}.
x=\frac{6}{5}
Reduce the fraction \frac{12}{10} 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
Linear equation
y = 3x + 4
Arithmetic
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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}