Uzupełnij:
a)15-35=15 + ...........=......... b)3 i jedna druga -10 =3 i jedna druga +...........=...........
-27 - 9 = -27 +.........=........ -6,25 - 9 =6,25 + ..........= ............
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+35=50+15=65-27-9=27+9=36
b)