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marmar
HELP!!!!! PICTURE ADDED
the perimeter of a triangle equals the summation of it sides ,, right??
so all what will you do is that : (5x-7) + (4x-4) + (13-x ) = 38 and you can calculate the value of x :D
I dont know how to do that
you will add like terms (5x+4x-x) + (-7-4+13) = 38 8x + 2 = 38 8x = 38 - 2 8x =36 x = 36/8 x = 4.5 you got it now??