In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
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Question: Problem: if 3 x – 5 y = 5 and x / x + y = 5 / 7 , then what is the value of x – y ? 
Options: a ) 9 , b ) 6 , c ) 4 , d ) 3 , e ) none of these

Answer: d


Question: Problem: the ratio of two no . addition and subtraction be 4 : 3 . the what is the ratio of numbers ? 
Options: a ) 3 : 2 , b ) 4 : 3 , c ) 5 : 1 , d ) 6 : 5 , e ) 7 : 1

Answer: e


Question: Problem: 64 + 5 * 12 / ( 180 / 3 ) = ? 
Options: a ) 22 , b ) 77 , c ) 29 , d ) 65 , e ) 21

Answer:
d