Question 388852
I know that the sides of an isosceles triangle are equal.
so, {{{2x + 4 = x + 8}}}
Subtract {{{x}}} from both sides
{{{x + 4 = 8}}}
{{{x = 4}}}
And, since the base is {{{5x - 2}}},
base = {{{5*4 - 2}}}
base = {{{18}}}