Answer:
sorry i guessed lol 384
Step-by-step explanation:
Your answer to this question would be 60 percent hope this helps
1200 parts/ 400 parts = 3
12 parts x 3 = 36 parts
In 1200 parts, 36 would be bad.

The property that justifies multiplying through eqn(2) by -2 is;
the rationalization to align the coefficients of x in both equations with a view to eliminating the terms in x.