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dau coroana 248:4:2×7+[(159+279):6-(832-759)]129= ????

39×[45×8:5:9×(1348-1299):7]-2184= ??


Răspuns :

62:2×7+(438:6-73):129=31×7+(73-73):129=217+0:129=217+0=217 39x(45×8:5:9×49:7)-2184=39×(360:5:9×7)-2184=39×(72:9×7)-2184=39×(8×7)-2184=39×56-2184=2184-2184=0