As of 7 being one side, subtract it with the whole...
When you subtract you get 10
Divide by 2 (or subtract 5)
So the two other sides of the triangle is 5m
First, we divide 46.25 by 5 which is 9.25. Subtract 2 from 9.25 and you have 7.25
First you subtract 7 minus 19 and 7/8b minus 5/4b:
5/4b+7=7/8b+19
-7/8b -7/8b
5/4b+7=7/8b+19
-7 -7
3/8b=12
Then you divide 12 by 3/8:
b=32