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b) (-1 1/6)*(-2/7)+12,4/-37,2 = (-7/6)*(-2/7)+(-1/3)= 1/3-1/3=0
c)-12,84:(-4)-13 1/2:(-27) = 3,21 - 27/2*(-1/27) = 3,21-(-1/2) = 3,21+0,5=3,71
d) -1,2/0,6+4,8/0,8-12,66/2,11 = -2+6-6 = 4-6 = -2
e) 1,6 *(-5/8)+(-2,4):0,12+41 = 1+20+41 = 21+41=62
f) (-3,6:0,09):(-5)+(-1,4):0,7 = 40:(-5)+(-2) = -8+(-2) = -8-2 = -10