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-12 + 10
-2
b) -4•-3 + 5•-2
12 -10
2
c) -4•-3 + 5•2
12 + 10
22
d) -4•3\16 + 5•-3/20
-12/16 + -15/20
-0,75 + -0,75
-1,5