22. $$ \frac{4 x+1}{5 x+10} \cdot \frac{30 x+60}{2 x-2} $$

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Calculate or simplify the expression $$ (4x+1)/(5x+10) * (30x+60)/(2x-2) $$.
Simplify the expression by following steps:
- step0: Solution:
  $$\frac{\frac{\left(4x+1ight)}{\left(5x+10ight)}	imes \left(30x+60ight)}{\left(2x-2ight)}$$
- step1: Remove the parentheses:
  $$\frac{\frac{4x+1}{5x+10}	imes \left(30x+60ight)}{2x-2}$$
- step2: Multiply the terms:
  $$\frac{6\left(4x+1ight)}{2x-2}$$
- step3: Reduce the fraction:
  $$\frac{3\left(4x+1ight)}{x-1}$$
- step4: Simplify:
  $$\frac{12x+3}{x-1}$$
The simplified form of the expression $$ \frac{4x+1}{5x+10} \cdot \frac{30x+60}{2x-2} $$ is $$ \frac{12x+3}{x-1} $$.
The simplified form of the expression is $$ \frac{12x+3}{x-1} $$.

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