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op(-3)=

(-5).(-3)+6:(-2)-1+4=

-1+6-(-12+5).(-4)+15=

(-12+6):(3-1)+5.(-1)=

-(-3)-(+2)+(-3)-(-1)=

-12:(-4)+5.(-5)=

op(-2)+op(2)=

(-3+2-1).(-10-1+6)=

16:(-4).(-2)+3=

-6+(4.(-3)+5)-30:6=

11

-18

-22

10

15

-1

-7

-8

3

0