Neither.
This is because one equation is without variables and the other is with variables.
You can cancel out nothing
Like terms are terms whose variables are the same. In this case, 7 and 2 have no coefficients therefore are like terms. For example, 7x and 2x would both be like terms because they have the same coefficient which is x.
20 miles/2 hours = 10 miles/1 hour, therefore her average speed is 10mph
The slope-intercept form: y = mx + b
m - slope
b - y-intercept
We have:

<h3>Answer: 5/3</h3>