-3x = -3 because you would multiply one of the equations by -1 to eliminate y.
The question is asking you to find out what number is a fraction of something. For example, the problem on the top right is asking 35 is 50% (one half) of a number so what you have to do is multiply 35 times 2 and the answer is 70
Answer:
There would be a 1/36 chance.
the greatest common factor between 13 and 39 is 13
