Answer:
1
Step-by-step explanation:
3 - 5 = -2 and 7 - 9 = -2. Therefore, nothing has to be changed.
x=1
3x-5=7x-9
Combine Variables:
-3x -3x
-5=4x-9
+ 9 +9
4= 4x
Divide:
1=x
Hope this helps :)