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3000-[60:5x(135:9+84:7)+19x4]:10=



Răspuns :

[tex]3000-[12*(15+12)+76]:10= \\ 3000-(12*27+76):10= \\ 3000-400:10= \\ 3000-40= \\ 2960[/tex]

trebuie sa respecti ordinea operatiilor.

in paranteza rotunda ai 135:9+84:7 = 15+12=27

==> 3000 - (60:5 x 27+19x4):10 = 3000 - (324+76):10 =3000-400:10 =  3000-40 = 2960