4) −482 − (176-482)-[2750-(176+2750)]

----- Nội dung dịch tự động từ ảnh -----
4) −482 − (176-482)-[2750-(176+2750)];
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5)
−382-[1925+(-382)]-[(3210-697)+(-3210+597)];
6) [(321–797)+(−321+697)]-371-[1900+(-371)];
7) [(−4625–164)-(-4625-164)]-[(1907-2134)–1907];
8) 17450+ (−1865) + (−17450)−(−1865)+(−14)+147;
9) 18950+(-271) + (−18850)−(−271)+(−48)+57;