I need proof for the problem:
What are the values of x and y?
50x+100y=900
x+1.5y=15.5
The answer is x=8 and 5=y. I simply guessed and my teacher requires proof.
The proof cannot be a guess and check method.
I need proof for the problem:
What are the values of x and y?
50x+100y=900
x+1.5y=15.5
The answer is x=8 and 5=y. I simply guessed and my teacher requires proof.
The proof cannot be a guess and check method.