What is the reason for stament 7 in the given proof

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

i dont know what you want me to answer for this but im guessing 2: 11?

add 8+12 to get a simplified answer of 12r-20