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如果1/2*3=1/2x1/3x1/4,1/7/*4=1/7x1/8x1/9x1/10那么(1/2*4)+(1/3*3)=?
题目详情
如果1/2*3=1/2x1/3x1/4,1/7/*4=1/7x1/8x1/9x1/10那么(1/2*4)+(1/3*3)=?
▼优质解答
答案和解析
(1/2*4)+(1/3*3)
=1/2x1/3x1/4x1/5+1/3x1/4x1/5
=3/2x1/3x1/4x1/5
=1/40
=1/2x1/3x1/4x1/5+1/3x1/4x1/5
=3/2x1/3x1/4x1/5
=1/40
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