bro it’s been so long since i last did this stuff i can’t remember how to do it, could someone please explain it :’)

your answer would be 10x - 1

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)

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7