脱式计算: 3/5×(2/3+5/4) 4/5÷7/4×35/8 12/7÷(2/3-1
问题描述:
脱式计算: 3/5×(2/3+5/4) 4/5÷7/4×35/8 12/7÷(2/3-1
脱式计算: 3/5×(2/3+5/4)4/5÷7/4×35/8 12/7÷(2/3-1/4) 谢谢!
答
3/5×(2/3+5/4)
=3/5x2/3+3/5x5/4
=2/5+3/4
=23/20
4/5÷7/4×35/8
=16/35x35/8
=2
12/7÷(2/3-1/4)
=12/7÷5/12
=144/35