8+7-1=14 is the answer correct
in the doubles minus one fact

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

With both problems. a. s.a. p directions on photo ^

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?