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OpenStudy (anonymous):
A triangle has one side that measures x, and the other two sides each measure 4 inches less than x. The perimeter is 19 inches. What is the measure of x? 2 3 5 9
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OpenStudy (anonymous):
x+4-x+4-x=19
OpenStudy (anonymous):
19 = x + 2(x-4)
OpenStudy (anonymous):
expands out to 19 = x + 2x - 8 ----> 19 = 3x - 8
OpenStudy (anonymous):
x=9
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