3a=4b, (both a and b are not equal to 0), then ((b)/(a))=what.
3a=4b，(a和b均不等于0)，那么((b)/(a))=多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>