Donna K.
answered • 03/23/15
Ph.D in Chemsitry - profesor of Chem and Biochem
Do it in parts
3(5- h) = 15 -3h
2(h-2) = 2h -4
Put together
15-3h - (2h -4) = -1
15 - 3h -2h +4 = -1
combine terms
19 - 5h = -1
subtract 19 from each side
-5h = -20
solve for h
h = 4
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