Twelve less than the quotient of a number and 7 is -2. find the number

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

What sums are equal to 6/12? choose all answers that are correct a.6/12+6/12+6/12+6/12+6/12+6/12 b.2/12+1/12+1/12+2/12 c.5/12+1/12 d.1/12+1/12+1/12+3/12 plz : )

Which one is the correct answer, and why?