Problem: if x / y = 8 / 7 , then ( 7 x + 6 y ) / ( 7 x â € “ 6 y ) = ?
Rationale: "answer dividing numerator as well as denominator by y , we get given exp . = ( 7 x + 6 y ) / ( 7 x â € “ 6 y ) = ( 7 x / y + 6 ) / ( 7 x / y â € “ 6 ) since x / y = 8 / 7 this implies that = [ ( 7 * 8 ) / 7 + 6 ] / [ ( 7 * 8 ) / 7 - 6 ) ] = ( 8 + 6 ) / ( 8 - 6 ) = 7 option : d"
annotated_formula: divide(add(8, 7), subtract(8, 7))