so, converting firstly the mixed fractions to improper fractions and then "adding".
Answer from: Quest
δabc ≅ δdcb by sas because
db ≅ ac . . given (side)
bc ≅ bc . . reflexive property (side)
∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)
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