[tex]18-(-10)=18+10=28\\-18-10=-28\\-18-(-10)=-18+10=-8\\-14-12=-26\\-14-(-12)=-14+12=-2\\14-(-12)=14+12=26\\2,75-5=-2,25\\2,75-(-5)=2,75+5=7,75\\-2,75-5=-7,75\\-2,75-(-5)=-2,75+5=2,25\\-77-22=-99\\85-58=27\\-9-(-73)=-9+73=64\\-222-444=-666\\59-(-441)=59+441=500\\-8,5-(-3)=-8,5+3=-5,5[/tex]
