Answer:
3a+5b
Explanation:
3(a+b+)2b
the first thing you'd do would be distribute 3 to a and b
3a+3b+2b
you then would combine like terms which are 3b and 2b
3a+3b+2b=3a+5b
solve for a: a=-5b/3
solve for b: b=-3a/5
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