3/4 of the lot is 3/4*100=75 yards long. This is 75*3=225 feet.
Yes. / = divide & * = multiply.
As for the equation, 10 divided by 1 2/3 is 15
9 and 12 are slope-intercept form and 10 and 11 are point-slope form
An equivalent ratio would be 7:10 or 70:100 or 42:60 and so on...
We have
-9 + 7 = -2
You can also rewrite this as
7 - 9 = -2
If it makes you more comfortable.
Hope this helps.