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Rezolva exercitiile, respectand regulile de calcul. 27;3+158-7*9 631+6*8+30;10

Răspuns :

1) 9+158-63= 167-63= 104
2)631+48+3= 682
27:3+158-7x9=104
9+158-63=
167-63=104

631+6x8+30:10=682
631+48+3=
679+3=682