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b)0,7+(-¾)-(-⅘)=0,7-0,75+0,8=0,75
c)-(23/40)+(1 ⁵/₁₆)+(-0,05)+(-6,125)+(-1¹⁷/₂₀)-(-1,025)=-0,575+0,3125-0,05-6,125-0,85=-7,7375
d)1,2-(-0,6)+(-1,8)-(-0,2)=1,2+0,6-1,8+0,2=0,2
e)2,2-(-0,6)+(-1,8)-(-4)=2,2+0,6-1,8+4=5
f)-5-(-2,6)+(-4,95)-(-1,4)+(-3,05)=-5+2,6-4,95+1,4-3,05=-9
liczę na naj ;D