Step-by-step explanation:
-0.625x - 0.25y = -1500 because multiplying it by -8 will equal to
5x + 2y = 12000.
Here's how :)
1. Divide 5x by -0.625x and 2y by -0.25y
This will leave us with -8 for both.
2. With this information, we know that the original equation (5x + 2y = 12000) turned into -0.625x - 0.25y by dividing by -8. Now all we have to do is also divide 12000 by -8 since what you do to one side of an equation, you must do to the next.
3. 12000 divided by -8 is -1500
I hope this helped you!
