Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

marcus has 210 baseball cards . he has 58 more than carter . how many baseball cards does carter have ?
152

there were 8 red roses and 2 white roses in the vase . melanie cut some more roses from her flower garden . there are now 14 red roses in the vase . how many red roses did she cut ?
6

2 birds were sitting on the fence . 4 more birds came to join them . how many birds are sitting on the fence ?
6