2,3-2+6(9-7)-5+6478+-564+45744-464= 2 + 3 - 2 + 6(2) - 5 + 6478 - 564 + 45744 - 464= 2 + 3 - 2 + 12 - 5 + 6478 - 564 + 45744 - 464= 3 + 12 + 6478 - 564 + 45744 - 464= 15 + 6478 - 564 + 45744 - 464= 15 + 5914 + 45744 - 464= 5929 + 45744 - 464= 51673 - 464= 51209
Therefore, 2,3-2+6(9-7)-5+6478+-564+45744-464 = 51209.
2,3-2+6(9-7)-5+6478+-564+45744-464
= 2 + 3 - 2 + 6(2) - 5 + 6478 - 564 + 45744 - 464
= 2 + 3 - 2 + 12 - 5 + 6478 - 564 + 45744 - 464
= 3 + 12 + 6478 - 564 + 45744 - 464
= 15 + 6478 - 564 + 45744 - 464
= 15 + 5914 + 45744 - 464
= 5929 + 45744 - 464
= 51673 - 464
= 51209
Therefore, 2,3-2+6(9-7)-5+6478+-564+45744-464 = 51209.