(1-3/4×5/9)×7/10能简算吗?
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发布时间：2024-10-06 22:32
共1个回答
热心网友
时间：2024-10-06 23:44
(1-3/4×5/9)×7/10
=(1-5/12)×7/10
=7/12*7/10=49/120
0.7×44/5 +7/10 +(1-3/10)×1/5
=0.7×8.8+0.7+0.7×0.2
=0.7×（8.8+1+0.2）
=0.7×10
=7
(5/9×7/10-1/3) × 6/5
= 2/3×7/10 - 2/5
= 7/15 - 6/15
= 1/15
5/9÷〔5/6x（7/9-1/3）〕
=5/9÷〔5/6x（7/9-3/9）〕
=5/9÷（5/6x4/9）
=5/9÷10/27
=5/9×27/10
=3/2
1-[(5/9)-(3/4)-(7/18)]*(-36)
=1+[(5/9)-(3/4)-(7/18)]*36
=1+(5/9)*36-(3/4)*36-(7/18)*36
=1+20-27-14
=-20
递等式计算，能简算的则简算，7/6-（7/6-7/9），9/10+（5/6-3/4），1/2+1/
7/6-（7/6-7/9）
=7/6-7/6+7/9
=7/9
9/10+5/6-3/4
=54/60+50/60-45/60
=59/60
1/2+1/6+1/12
=1-1/2+1/2-1/3+1/3-1/4
=1-1/4
=3/4
7/15+4/15+2/5+3/5
=11/15+1
=26/15
3/5×4/7+0.6×10/7-0.6
=0.6×4/7+0.6×10/7-0.6
=0.6×（4/7++10/7-1）
=0.6×1
=0.6
4/7÷8/3+3/73/8
=4/7x3/8+3/7x3/8
=(4/7+3/7)x3/8
=1x3/8
=3/8
5/8÷7/9+3/8÷7/9
=(5/8+3/8)÷7/9
=1÷7/9
=9/7
5/67/13+6/13÷6/5+5/6
=5/6x7/13+7/13x5/6+5/6
=5/6x(7/13+6/13+1)
=5/6x2
=5/3
8/15×[5/6÷(7/9-1/3)]
=8/15 × (5/6 × 9/4)
=8/15 × 15/8
=1
