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Sethammons · Answer 1 · 2023-03-13T06:43:12+0000

hello

the question here requires we solve the perimeter of an equilateral triangle

an equilateral triangle has all it's sides equal

$\begin{gathered} \text{perimeter of an equilateral triangle }=\text{ 3L} \\ L=\text{length of it's sides} \end{gathered}$

length = 2x - 1

perimeter = 3l

substitute the value of the length into the formula

$\begin{gathered} \text{perimeter = 3L} \\ 63=3(2x-1) \\ \text{open the bracket and solve for x} \\ 63=6x-3 \\ \text{collect like term} \\ 63-3=6x \\ 60=6x \\ \text{divide both sides by 6} \\ (60)/(6)=(6x)/(6) \\ x=10 \end{gathered}$

the value of x equals 10

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