260/500= 26/50= 13/25 is the answer to the question
To solve for x
bx=-7
divide b on both sides
x=-7/b
to solve for b
bx=-7
divide x on both sides
b=-7/x
I think m = 3. Because on the other all sides are equal. (12) and the other side is 3 so that most likely means all sides are 3. Hope this helps
Answer: it is 
Step-by-step explanation: