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a fost răspuns

calculeaza respectand ordinea operatiilor: 7+8+(23×3-45)-6=_______; 72 ×5-(276-8×9)-6=; 279-179+(50+25×3)-25=; 5×(24×2-40+10)+2000=;(238×4-181)-(252-198)=______;

Răspuns :

7+8+(23x3-45)-6=
15+(69-45)-6=
15+24-6=39-6=33

72x5-(276-8x9)-6=
360-(276-72)-6=
360-204-6=156-6=150

279-179+(50+25x3)-25=
100+(50+75)-25=
100+125-25=225-25=200

5x(24x2-40+10)+2000=
5x(48-40+10)+2000=
5x18+2000=
90+2000=2090

(238x4-181)-(252-198)=
(952-181)-54=771-54=717