Asked by Kaitlyn

A triangle has a perimeter of 81 inches. The side lengths can be found by x, 3x-1, and 4x+2
what is the value of x?
Answered by Ms. Sue
81 = x + 3x - 1 + 4x + 2

81 = 8x + 1

80 = 8x

10 = x

Answered by Kg
x + 3x-1 + 4x +2 = 81
8x+ 1 = 81
8x+1-1 = 81-1
8x = 80
8x/8 = 80/8

x = 10
Answered by dsfsd
10
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