Question

two equal sides of a triangle are each 4m less than three times the third side. find the dimensions of the triangle , if its perimeter is 55m.

Answer 1

Let the third side be x. 
therefore the equation so formed is,
3x+ 2(3x-4) = 55
3x + 6x-8 = 55
9x =55 +8
9x = 63
x= 7
i.e. all sides of the triangle are, 3x= 21m,  equal sides = 17m, 17m.

Answer 2

Answer:

Let the third side be x.  

therefore the equation so formed is,

3x+ 2(3x-4) = 55

3x + 6x-8 = 55

9x =55 +8

9x = 63

x= 7

i.e. all sides of the triangle are, 3x= 21m,  equal sides = 17m, 17m.

Step-by-step explanation: