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x + 1 cm
X - 1 cm
Х
The perimeter of the triangle is 9 cm.
Form an equation that has the sum of the sides on the left and
the perimter on the right.
Answer​

Respuesta :

☛ Perimeter = Sum of all sides

⇛Perimeter = x+1 + x-1 + x

⇛9 = x + x + x + 1 - 1

⇛9 = 3x

⇛x = 9/3

⇛x = 3 cm

Sum of 1 side is 3 cm

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