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f)= -0,85+4,7-4,85=3,85-4,85= -1
g)= 5/4-5/10-3/7-0,25+1 1/2=5/4-1/2-3/7-0,25+1 1/2=3/4-3/7-0,25+1 1/2=
=9/28-0,25+1 1/2=1/14+3/2=11/7=1 4/7
h)= -11/24+2,5+3 1/3-(-0,125)=49/24+10/3-(-0,125)=43/8-(-125/1000)=
=43/8-(-1/8)=43/8+1/8=11/2=5 1/2
f) -1
g i h niewiem