Which number sentence matches the question below?

mindy has a total of 228 books.

if mindy gives 89 books to her local library, how many books will she have left?

a.
228 + 89 =

b.
228 - 89 =

c.
- 89 = 228

sites:

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)