Worth 50 points! : d
an equilateral triangular tent has sides that measure x−10 units. its perimeter is 63 units.

what is the value of x?
x=

X- 10 if the perimeter is 63 it should be 53

An equilateral triangle's sides are all equal. So you can set up the following equation and solve.

3(x-10)=63
x-10=21
x=31

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