Answer:
25 and 35
Step-by-step explanation:
Let the numbers be 5x and 7x
(5x+5)/(7x+5)=3/4
4(5x+5)=3(7x+5)
20x+20=21x +15
20-15=21x-20x
5=x
So,the numbers will be
5x=5*5 =25
7x=7*5=35
Multiply the four, canceling it out. Multiply the four with the negative nine. Divide 9 by -36 and you get x=4
Answer:

Step-by-step explanation:

X
X 4
X
X 


This system will have 1 solution <==
** if it were to end like 0 = 4, or 2 = -3....no variables and numbers that dont equal....this means no solutions.
** if u were to end up with 5 = 5, or -9 = -9...no variables and numbers that do equal, then u will have infinite solutions
** but if u end with y = -2 or x = 5...a variable equaling a number, then u will have 1 solution