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4a-5a-3= -a - 3
-5a+7b+6a= a + 7b
6b-6a+2b= -6a + 6b
(-8y) * 1.2 = -9,6y
10a/(-2) = -5a
-a-3
a+6b
8b-6a
-9.6y
-5a