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Calculeaza,respectand regulile invatate: 52+(64-25:5)×2; 309-3×(100-72:9) ; 84-120:(90×2:10-6); (99+3)×21×0:7; 104:2+(6+36:6)×5; 4+4×(4+4×4)-36:9:2

Răspuns :

Mirabelawow
52+(64-25:5)×2
52+(64-5)
52+59
111

309-3×(100-8)
309-(3×92)
309-276
33

84-120:(90×2:10-6)
84-120:(180:10-6)
84-120:(18-6)
84-(120:12)
84-10
74

(99+3)×21×0:7
(102×21)×0,7
2142×0,7
1499,4

104:2+(6+36:6)×5
52+(6+36:6)×5
52+(6+6)×5
52+(12×5)
52+60
112

4+4×(4+4×4)-36:9:2
4+4×(4+16)-4:2
4+(4×20)-4:2
4+(80-4:2)
4+(80-2)
4+79
83

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