作业帮5×6×7-2×3×4/5×6×7数学简便算法sorry!少打了个括号!正确题目：（5×6×7-2×3×4）/5×6×7
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/06 11:20:31
5×6×7-2×3×4/5×6×7数学简便算法sorry!少打了个括号!正确题目：（5×6×7-2×3×4）/5×6×7
5×6×7-2×3×4/5×6×7数学简便算法
sorry!少打了个括号!
正确题目：（5×6×7-2×3×4）/5×6×7
5×6×7-2×3×4/5×6×7数学简便算法sorry!少打了个括号!正确题目：（5×6×7-2×3×4）/5×6×7
（5*6*7-2*3*4）/5*6*7
=5x6x7/5x6x7-2x3x4/5x6x7
=1-2x3x4/5x6x7
=1-6x4/5x6x7
=1-4/5x7
=1-4/35
=31/35