if x = 5 - q and y = 3 q - 1 , then for what value of q , x is three times to y ?
"explanation : x = 3 y < = > 5 - q = 3 ( 3 q - 1 ) < = > 5 - q = 9 q - 3 < = > 8 q = 8 < = > q = 1 . answer : b"
add(1, subtract(5, 5))