Equation:
[tex]\boxed{P=3x+6}[/tex]
x-value:
[tex]\boxed{x=\frac{41}{3}}[/tex]
Remember you should write complete questions in order to get excellent and precise answers. Anyway, I have attached an image below with a triangle. The perimeter (P) of a triangle is the sum of all three sides. So, from the graph, it is true that:
[tex]P=(x+4)+(x+3)+(x-1) \\ \\ Combine \ like \ terms: \\ \\ P=(x+x+x)+(4+3-1) \\ \\ P=3x+6 \\ \\ Equation: \\ \\ \boxed{P=3x+6}[/tex]
Solving x:
[tex]P=47 \\ \\ 47=3x+6 \\ \\ 3x=47-6 \\ \\ 3x=41 \\ \\ \boxed{x=\frac{41}{3}}[/tex]
Area of triangle: https://brainly.com/question/9835350
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