Assemble the proof by dragging tiles to the Statement and Reasons columns.

Step-by-step explanation:

In a two column proof we always list the given information first. Then, we add statements and reasons in order of the steps.

Statements                                Reasons

∠ABC≅∠DEF                             Given

∠DEF=∠GHI                               Given

∠ABC=∠GHI                               Substitution Property of Equality

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

72 is the answer to this problem