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b) -1,5:9/8+5 5/6x3/8= -3/2:9/8+35/6x3/8=-2/3x9/8+4/2=-3/4+8/4=5/4=1 1/4
c) (2/3-1,8x5/6):(-1/3)=(2/3-18/10x5/6):(-1/3)=(4/6-9/6):(-1/3)=(-5/6):(-1/3)=(-5/6)x(-3/1)=5/2=2 1/2
d) 5x[0,6-3/5:(-2)]=5x(0,6+0,3)=5x0,9=4,5
e) 2000x0,03+(-0,008:0,04)=60-0,2=59,8
f) (7/24:0,125+3,5):(2/3-0,25)=(7/24:1/8+7/2):(2/3-1/4)=(7/24x8/1+7/2):(8/12-3/12)=(14/6+21/6):5/12=35/6x12/5=14
Liczę, że pomogłam ^.^