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a)14:(-3)-(-8):3 = - 4²/₃ + 2²/₃ = - 2²/₃
b)(-19):(-2)+(-21):2 = 9,5 - 10,5 = - 1
2.
a)[-2,5-(-¼)]:(1,5) = - 5/4 : 1,5 = - 5/6
b)-0,81:⁹/₁₀+5*0,48 = - 0,9 + 2,4 = 1,5
c)144:[10+(-¼-3,75):2]:(-3-15) = 144 : [10 - 4 : 2] : (- 18) = 144 : 8 : (-18) = -1