Patrick B. answered 03/09/19
Tutor
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Math and computer tutor/teacher
14x-4 - (3x-2) - (5x+3) =
14x - 4 - 3x + 2 -5x - 3 =
6x - 5
check let x=1. Then the perimeter is 10 and
the 2 sides are 1 and 8. That leaves 1 for the
3rd side and 6(1)-5 = 1, so it checks.