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\frac{1}{4}x+\frac{1}{4}\left(-3\right)-\frac{3}{4}\left(x-5\right)=0
Use the distributive property to multiply \frac{1}{4} by x-3.
\frac{1}{4}x+\frac{-3}{4}-\frac{3}{4}\left(x-5\right)=0
Multiply \frac{1}{4} and -3 to get \frac{-3}{4}.
\frac{1}{4}x-\frac{3}{4}-\frac{3}{4}\left(x-5\right)=0
Fraction \frac{-3}{4} can be rewritten as -\frac{3}{4} by extracting the negative sign.
\frac{1}{4}x-\frac{3}{4}-\frac{3}{4}x-\frac{3}{4}\left(-5\right)=0
Use the distributive property to multiply -\frac{3}{4} by x-5.
\frac{1}{4}x-\frac{3}{4}-\frac{3}{4}x+\frac{-3\left(-5\right)}{4}=0
Express -\frac{3}{4}\left(-5\right) as a single fraction.
\frac{1}{4}x-\frac{3}{4}-\frac{3}{4}x+\frac{15}{4}=0
Multiply -3 and -5 to get 15.
-\frac{1}{2}x-\frac{3}{4}+\frac{15}{4}=0
Combine \frac{1}{4}x and -\frac{3}{4}x to get -\frac{1}{2}x.
-\frac{1}{2}x+\frac{-3+15}{4}=0
Since -\frac{3}{4} and \frac{15}{4} have the same denominator, add them by adding their numerators.
-\frac{1}{2}x+\frac{12}{4}=0
Add -3 and 15 to get 12.
-\frac{1}{2}x+3=0
Divide 12 by 4 to get 3.
-\frac{1}{2}x=-3
Subtract 3 from both sides. Anything subtracted from zero gives its negation.
x=-3\left(-2\right)
Multiply both sides by -2, the reciprocal of -\frac{1}{2}.
x=6
Multiply -3 and -2 to get 6.