(1) $$ \frac{1}{4 x-2 y}-\frac{1}{y-2 x} $$

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Calculate or simplify the expression $$ 1/(4x-2y)-1/(y-2x) $$.
Simplify the expression by following steps:
- step0: Solution:
  $$\frac{1}{\left(4x-2yight)}-\frac{1}{\left(y-2xight)}$$
- step1: Remove the parentheses:
  $$\frac{1}{4x-2y}-\frac{1}{y-2x}$$
- step2: Rewrite the fractions:
  $$\frac{1}{4x-2y}+\frac{1}{-y+2x}$$
- step3: Factor the expression:
  $$\frac{1}{2\left(2x-yight)}+\frac{1}{-y+2x}$$
- step4: Reduce fractions to a common denominator:
  $$\frac{1}{2\left(2x-yight)}+\frac{2}{\left(-y+2xight)	imes 2}$$
- step5: Reorder the terms:
  $$\frac{1}{2\left(2x-yight)}+\frac{2}{2\left(-y+2xight)}$$
- step6: Rewrite the expression:
  $$\frac{1}{2\left(2x-yight)}+\frac{2}{2\left(2x-yight)}$$
- step7: Transform the expression:
  $$\frac{1+2}{2\left(2x-yight)}$$
- step8: Add the numbers:
  $$\frac{3}{2\left(2x-yight)}$$
- step9: Simplify:
  $$\frac{3}{4x-2y}$$
The simplified form of the expression $$ \frac{1}{4x-2y}-\frac{1}{y-2x} $$ is $$ \frac{3}{4x-2y} $$.
The simplified form of the expression is $$ \frac{3}{4x-2y} $$.

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