Răspuns :
Răspuns:
..(20+25):5 =45÷5=9
20÷5+25÷5=4+5=9
(42-30)÷6=12÷6=2
42÷6-30÷6=7-5=2
(72-45):9=27÷9=3
72÷9-45÷9=8-5=3
(28+42)÷7=70÷7=10
28÷7+42÷7=4+6=10
Răspuns:
..(20+25):5 =45÷5=9
20÷5+25÷5=4+5=9
(42-30)÷6=12÷6=2
42÷6-30÷6=7-5=2
(72-45):9=27÷9=3
72÷9-45÷9=8-5=3
(28+42)÷7=70÷7=10
28÷7+42÷7=4+6=10