two equal sides of an isosceles triangle are 3x - 1 and 2 X + 2 units .The third side is 2 x units .Find X and the perimeter of the triangle
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two equal sides mean
3x-1=2x+2
3x-2x=2+1
x=3
perimeter of the triangle=sum of the three sides
=(3x-1)+(2x+2)+(2x)
=(3*3-1)+(2*3+2)+(2*3)
=(9-1)+(6+2)+(6)
=8+8+6
=22
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