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4/5x5/13+括号-3/5x5/13+5/13x括号-1又3/5
题目详情
4/5x5/13+括号-3/5x5/13+5/13x括号-1又3/5
▼优质解答
答案和解析
4/5x5/13+括号-3/5x5/13+5/13x括号-1又3/5
=4/13+(-3/13+5/13)-8/5
=4/13+2/13-8/5
=6/13-8/5
=30/65-104/65
=-64/65
=4/13+(-3/13+5/13)-8/5
=4/13+2/13-8/5
=6/13-8/5
=30/65-104/65
=-64/65
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