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b) 6-(-7)*(-2) 6 - 14 -8
--------------- = ---------- = ------ = 2
-4 -4 -4
c) (-2-4)*(-6):(3)² = (-6)*(-6):9 = 36:9 = 4
d) (-3)*(-2-10)-5 (-3)*(-12)-5 36-5 31
---------------------- =--------------- = ------- = ---- = -15,5
7-9 -2 -2 -2
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