a)2,5+(-2,5)= b)-88+.......=0 c).4,73+..........=0 4.oblicz najprostszym sposobem: a)105+(-7)+(-13)+20=........ b)-16+67+(-10)+(-7)+66=........................ c)2,4+(-4,1)+7,6+(-5,9)= d)-0,75+6,3+(-11)+(-1,25)+(-7,4) obl: a)4-55= b)-2-1= c)-2,5-3=15
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a)2,5+(-2,5)= 0
b)-88+..88.....=0
c).4,73+....(-4,73)......=0
a)105+(-7)+(-13)+20=...105.....
b)-16+67+(-10)+(-7)+66=..........100..............
c)2,4+(-4,1)+7,6+(-5,9)= 0
d)-0,75+6,3+(-11)+(-1,25)+(-7,4) = -14,1
a)4-55= -51
b)-2-1= -3
c)-2,5-3-15 = -20,5 ( ten podpunkt chyba źle jest przepisany )
a) 2,5 - 2,5 = 0
b) -88 + 88 = 0
c) 4,73 +(- 4,73) = 4,73 - 4,73 = 0
a) 105 - 7 - 13 + 20 = 105
b) -16 + 67 - 10 - 7 + 66 = 133 - 33 = 100
c) 2,4 - 4,1 + 7,6 - 5,9 = 10 - 10 = 0
d) - 0,75 + 6,3 - 11 - 1,25 - 7,4 = 6,3 - 20,4 = -14,1
a) 4 - 55 = -51
b) -2 -1 = -3
c) -2,5 - 3 - 15 = -20,5