31.8×7.9-2.5×210％+44.3×2.
答案:1 悬赏:40 手机版
解决时间 2021-03-19 14:02
- 提问者网友：且恨且铭记
- 2021-03-19 04:26
31.8×7.9-2.5×210％+44.3×2.
最佳答案
- 五星知识达人网友：玩世
- 2021-03-19 05:15
31.8×7.9-12.5×210％+44.3×2.1
=31.8×7.9-12.5×2.1+44.3×2.1
=31.8×7.9+(44.3-12.5)×2.1
=31.8×7.9+31.8×2.1
=31.8×(7.9+2.1)
=31.8×10
=318
=31.8×7.9-12.5×2.1+44.3×2.1
=31.8×7.9+(44.3-12.5)×2.1
=31.8×7.9+31.8×2.1
=31.8×(7.9+2.1)
=31.8×10
=318
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