Patrick B. answered 01/15/19
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5(4b+3)+5(3b-2) = 20b + 15 + 15b - 10 = 35b + 5
6(m+2)+4(2m+5) = 6m + 12 + 8m + 20 = 14m + 32
-15x+20y-5x-30y = -20x -10y