An isosceles triangle has two equal sides called legs and the base. if each leg of the isosceles is 5 times the base and the perimeter is 77 m. what is the lenghth of each side?

-35
-35
-7

7x5=35
35+35+7=77

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Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table