Question 393773
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Hi
equilateral triangle
equal sides given in cm are (3a+2),(2b-a) and (b+3).
3a + 2 = 2b - a      |sides equal
    2a + 2 = 2b
     a  + 1 = b
3a + 2 = (a+1) + 3   |substituting for b for side (b+3)
    2a = 2
     a = 1  and b = 2    | that is each side is 5cm
Perimeter = 15cm