Obilcz wartości wyrażen a)-[-(-4,5)] + (-24,6) - 6/7 : (-13/14)= b)2,1 . (-0,7) - 2 1/3 . 3= c)3 3/4 - (-5 1/5 ) + (-3) . (-5)= te ' . ' ( kropki ) to mozenie :) prosze o wszytskie obliczenia

a) ...= -4,5-24,6-6/7 . (-14/13)= =29,1-6 . 2/13= =29 1/10 +12/13= =29 13/130 + 120/130= =29 133/130= =30 3/130 b) ..=-1,47 - 7/3 . 3= =-1,47 - 7= =-8,47 c) ..= 15/4 + 26/5 -3 . (-5)= =75/20 + 104/20 +15= =179/20 + 300/20= =479/20= 23 19/20