Combining like terms

5h-6-8+7h

It’s 12h-14 because -6 and -8 combine to be -14 and 5h and 7h equal 12h

12h-14 because if you think of it like the numbers with the same letter at the end and can combine...it easier for me to think of it that way so maybe it will help you:)

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.