11分之5减去15分之13减去括号15分之13减去5分之2括回来等于多少?
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5/11-13/15-(13/15-2/5)
=5/11-13/15-13/15+2/5
=5/11+2/5-13/15-13/15
=(5/11+2/5)-(13/15+13/15)
=(25/55+22/55)-26/15
=47/55-26/15
=141/165-286/165
=-145/165
=5/11-13/15-13/15+2/5
=5/11+2/5-13/15-13/15
=(5/11+2/5)-(13/15+13/15)
=(25/55+22/55)-26/15
=47/55-26/15
=141/165-286/165
=-145/165
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同理:先通分后加减
5/11-13/15-(13/15-2/5)
=5/11-13/15-13/15+2/5
=5/11-26/15+2/5
=75/165-286/165+66/165
=(75-286+66)/165
=-145/165
5/11-13/15-(13/15-2/5)
=5/11-13/15-13/15+2/5
=5/11-26/15+2/5
=75/165-286/165+66/165
=(75-286+66)/165
=-145/165
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5/11-13/15-(13/15-2/5)
=5/11-13/15-13/15+2/5
=75/165-276/165+66/165
=-135/165
=-9/11
=5/11-13/15-13/15+2/5
=75/165-276/165+66/165
=-135/165
=-9/11
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根据提示列式得
5/11-13/15-(13/15-2/5)
5/11-13/15-(13/15-2/5)
=5/11-13/15-(13/15-6/15)
=5/11-13/15-7/15
=5/11-(13/15+7/15)
=5/11-4/3
=15/33-20/33
=-5/33
=5/11-(13/15+9/15)
=5/11-22/15
=
5/11-13/15-(13/15-2/5)
5/11-13/15-(13/15-2/5)
=5/11-13/15-(13/15-6/15)
=5/11-13/15-7/15
=5/11-(13/15+7/15)
=5/11-4/3
=15/33-20/33
=-5/33
=5/11-(13/15+9/15)
=5/11-22/15
=
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2022-06-30 · 知道合伙人教育行家
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11分之5减去15分之13减去括号15分之13减去5分之2括回来等于负33分之29
解析:
5/11-13/15-(13/15-2/5)
=5/11-13/15-13/15+2/5
=(5/11+2/5)-(13/15+13/15)
=47/55-26/15
=141/165-286/165
=-145/165
=-29/33
解析:
5/11-13/15-(13/15-2/5)
=5/11-13/15-13/15+2/5
=(5/11+2/5)-(13/15+13/15)
=47/55-26/15
=141/165-286/165
=-145/165
=-29/33
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