No her estimate is to low because if you multiply 15.5 by 12 you get 186
3:5 my answer has to be 20 characters so im just typing the rest of this to answer your question.
We have that
<span> 5x/7=22
multiply by 7 both sides
5x=22*7-------> 5x=154
divide by 5 both sides
x=154/5
x=30.8--------> x=30 4/5
the answer is
x=30 4/5</span>
It isn’t because when there is no addition in the equation the y intercept is 0
