if 8 a = 9 b and ab ≠ 0, what is the ratio of a / 9 to b / 8? Choose the correct choice from the following answers:	A) 64 / 81	B) 8 / 9	C) 1	D) 9 / 8	E) 81 / 64
<gadget id="calculator">8 * 9</gadget>
<output>72</output>

<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<gadget id="calculator">72 / 72</gadget>
<output>1</output>

<result>C</result>
if 8 a = 9 b and ab ≠ 0, what is the ratio of a / 9 to b / 8?
divide(multiply(8, 9), multiply(9, 8))
"if ab ≠ 0 then a and b has two integer sets of pair if a = 9 then b = 8 and if a = - 9 then b = - 8 also in fraction if a = 1 / 8 then b = 1 / 9 any of the pair we check the ratio 8 a / 9 b = 1 answer : c"