3,-5,7,-13如何算24点,只能用加减乘除

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3,-5,7,-13如何算24点,只能用加减乘除
3,-5,7,-13如何算24点,只能用加减乘除

3,-5,7,-13如何算24点,只能用加减乘除
[7+(-5)×(-13)]÷3=24

(7+5*13)/3 = 24

[7+(-5)×(-13)]÷3=24

1: (5 × 13 + 7) ÷ 3
2: ((5 × 13) + 7) ÷ 3
3: (7 + 5 × 13) ÷ 3
4: (7 + (5 × 13)) ÷ 3
5: (7 + 13 × 5) ÷ 3
6: (7 + (13 × 5)) ÷ 3
7: (13 × 5 + 7) ÷ 3
8: ((13 × 5) + 7) ÷ 3

1: (5 × 13 + 7) ÷ 3
2: ((5 × 13) + 7) ÷ 3
3: (7 + 5 × 13) ÷ 3
4: (7 + (5 × 13)) ÷ 3