7-(16-12÷(5+9×2-19))
和
和
给定: 7-(16-12÷(5+9×2-19))
求解: 我们必须求解 7-(16-12÷(5+9×2-19)) 的值
解法:
7 - (16 - 12 ÷ (5 + 9 × 2 - 19))
= 7 - (16 - 12 ÷ (5 + 18 - 19))
= 7 - (16 - 12 ÷ (5 - 1))
= 7 - (16 - 12 ÷ 4)
= 7 - (16 - 3)
= 7 - 13
= - 6
广告
给定: 7-(16-12÷(5+9×2-19))
求解: 我们必须求解 7-(16-12÷(5+9×2-19)) 的值
解法:
7 - (16 - 12 ÷ (5 + 9 × 2 - 19))
= 7 - (16 - 12 ÷ (5 + 18 - 19))
= 7 - (16 - 12 ÷ (5 - 1))
= 7 - (16 - 12 ÷ 4)
= 7 - (16 - 3)
= 7 - 13
= - 6