Delisa's computer monitor is 21 inches, and the diagonal of Delisa's tablet is 9.7 inches.
Hope this helped!
Notice the picture below
see where that angle is?
check your Unit Circle for that value
also notice, that fractions of

are just like grabbing 180 degrees and splitting it, so one third of 180 or

is 180/3 or 60 degrees
1 8/4 so you add them and get yo answer then make it into a improper fraction
You just have to find what number times 9 equals your original equation so 9 and -2 are -18 and 9 and 3 are 27 so your distributed equation would be:
9(-2x+3)