第1个回答 2022-11-13
2x X7/10=14
14x=140
x=10
2x-3/5x=4
7x/5=4
7x=20
x=20/7
1/6x÷12=8/9
x/6=32/3
x=54
------------------------脱式计算--------------------
7/8X25X4
=7/8*100
=700/8
5-0.64X7/8÷4
=5-0.32*7
=2.76
(0.8+1/2)X5/4
=1+5/8
=13/8
(22+11/12)÷11/24
=22*24/11+2
=50
15/64÷(3/4+1/8)
=15/16*8/7
=15/14
(4/7X5/4+2/7)÷0.2
=5/7*5+10/7
=35/7
=5