A simplified fraction is (2/3). If you subtract 1 from the numerator and 3 from the denominator of the original fraction, you will get a new fraction. This new fraction is (3/4) after simplification. What is the original fraction? ?
一个分数化简后是(2/3)，如果将原分数的分子减去1，分母减去3，就得到一个新分数，这个新分数化简后是(3/4)，原分数是多少？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) * 3</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">(9/4) - 1</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(9/4) - 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(5/4) / (1/4)</gadget>
<output>5</output>

<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">10 / 15</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>