Helyes: 20+ 42=62, 34+63= 97, 75-23=52, 89-40=49, 40+50=90, 72+5=77, 86-5=81, 73-2=71, Helytelen: 20+42=82, 36+51=77, 75-41=44, 67-30=23, 60+20=90, 51+4=56, 58-3=25, 64+4=69,

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