Supermarket "June 1st" promotion, sold (3/4) tons of beverages that day, which was (1/2) tons more than biscuits. How many tons of drinks and biscuits were sold that day?
超市"六一"搞促销，当天销售饮料(3/4)吨，比饼干多售出(1/2)吨．当天销售出的饮料和饼干共多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) - (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) + (3/4)</gadget>
<output>1</output>

<result>1</result>