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Answer:
1.
5a, 2a
mb, b2
43, 4
2.
2m, 6m
5n, 2n
3.
2g, 3g
4.
7x2, 3x2
Step-by-step explanation
u put all the terms with the same variables together, when there is a number w/o a variabel that is its own term, and can be combined with others.