Solve the perimeter formula for an isosceles triangle, p=2a+b, solve for b.
2 answers:
B= p-2a
Just subtract 2a from b to get b by itself and if you move b over to the other side you can subtract by p and then divide be the negative
P= 2a+b
Take 2a to the other side as a negative number
So that b= p/2a (option a)
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