A triangle has one side that measures 9 units, another side that measures x, and a third side that measures 2 units more than x. The perimeter is 29 units.
Which equation would we use to find the value of x?
x + x + 2 = 29
x + x + 2 + 9 = 29
x + x + x + 2 = 29
x + x + x + 2 + 9 = 29
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