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3*9+31=58
54-4*8=22
42/6-5=2
15+54/9=21
42-35/7=37
6*(13+7)=120
(70-30)*8=320
15*(21-18)=45
55/(8+3)=5
(30-6)/2=12
(40-4)/6=6
HASLO :ZNASZ REGULYI
3×9=27+31=58
54-4=50×8=400
b) 42÷6=7-5=2
15+54=69÷9=7 i zostanie reszta 6
42-35=7÷7=1
c) 13+7=20×6=120
70-30=40×8=320
21-18=3×15=45
d) 8+3=11=51÷11=4 i reszta 7
30-6=24÷2=12
40-4=36÷6=6
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