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(48*a+216):40=27
Va rogggg dau coroana!! ​


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Salutare!

(48×a+216):40=27

(48×a+216)=27×40

(48×a+216)=1 080

48×a=1 080-216

48×a=864

a=864:48

a=18

v: (48×18+216):40=

(864+216):40=

1080:40=

27✔

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