isamero2018
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1) 16-3•2+4•1-5+13-8:4-9•2:3-1=
2) 3-[5•6-4•(12:4-5•2)-24:3] =
3) 2-3•[-2+10-4•(-1+3:3)-8]-2 =
4) [-6-(-2+4•(-2+4)-5]-[-8-(7-2)-6] =
5) [(-8):(-2)-6:(2-5)]:[10:(-2)-3:(1-2)] =
6) [14-(-6)+(-6)+(-6)]:[17+(-7)-(+3)] =
7) [3•(5-2)-10:2]•5•(1-4)-(3-7)] =​

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