Let the two equal sides of the isosceles triangle be represented by x units each, and the third side be represented by y units.
Since the perimeter is 30 units, we have the equation:
2x + y = 30
Since it is an isosceles triangle, we also have:
y = x
Substitute y = x into the first equation:
2x + x = 30
3x = 30
x = 10
Therefore, the value of x is 10 units.
An isosceles triangle has a perimeter of 30 units. What is the value of x ?
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