10а+4-4а=6а+4=2(3а+2)
-4b+10+4-5b=-9b+14
c-5d+d-5c=-4c-4d=-4(c+d)
-5n-m-4n+8m-2m+5n=-4n+5m
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10а+4-4а=6а+4=2(3а+2)
-4b+10+4-5b=-9b+14
c-5d+d-5c=-4c-4d=-4(c+d)
-5n-m-4n+8m-2m+5n=-4n+5m