Question

The product of two rational number is -9 by 4 if one of the number is - 12 by 7 find the other

Answer 1

Answer: 21/16

Step-by-step explanation:

Let us take the equation as

a * b = c (a=-12/7;b= x; c= -9/4)

-12/7 * x = -9/4

x = -9/4 * 7/-12    (LHS to RHS)

x = -3/4 * 7/12      (Cancellation by 3)

x = 21/6