PLEASE HELP simple geometry problem

Mathematics

1 answer:

vlabodo [156]4 years ago

5 0

Perimeter is adding the 3 sides together. Since both triangles have the same perimeter set both triangles to equal:

(x+3 + x+3 + x+3) = (x+3 + 2x-3 + x)

Simplify each side:

3x+9 = 4x

Subtract 3x from each side:

x=9

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