(6/13*1.7+7/13*1.7)÷7/10 简算,要过程,表明简算方法。谢谢 9*1/8÷9*1/8 1/8*58+1/8*41+1/8
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(6/13×1.7+7/13×1.7)÷7/10
=[(6/13+7/13)×1.7]÷7/10
=1×1.7÷0.7
=17/7
9×1/8÷9×1/8
=(9÷9)×(1/8×1/8)
=1×1/64
=1/64
1/8×58+1/8×41+1/8
=1/8×58+1/8×41+1/8×1
=1/8×(58+41+1)
=1/8×100
=12.5
愿对你有所帮助!
=[(6/13+7/13)×1.7]÷7/10
=1×1.7÷0.7
=17/7
9×1/8÷9×1/8
=(9÷9)×(1/8×1/8)
=1×1/64
=1/64
1/8×58+1/8×41+1/8
=1/8×58+1/8×41+1/8×1
=1/8×(58+41+1)
=1/8×100
=12.5
愿对你有所帮助!
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我还想再问你几道题,可以吗?
14/15÷[﹙4/5+2/3﹚×10/11]
9.9×6.9-69×0.39
68*六十六分之六十七
追答
14/15÷[﹙4/5+2/3﹚×10/11]
=14/15÷﹙22/15×10/11)
=14/15÷4/3
=7/10
9.9×6.9-69×0.39
=9.9×6.9-6.9×3.9
=(9.9-3.9)×6.9
=6×6.9
=41.4
68×67/66(这个简便不会)
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