Question 404921
Let x = the length of one of the two equal legs of this isosceles triangle.
The perimeter can be expressed by:
{{{x+x+(1.5x-3) = 28.5}}}cm. Simplify and solve for x.
{{{3.5x-3 = 28.5}}}
{{{3.5x = 31.5}}}
{{{x = 9}}}cm.