2.125除以(0.25+2.5x0.8)怎么简算

2025-05-10 10:33:31
推荐回答(1个)
回答1:

2.125÷(0.25+2.5x0.8)
=2.5×0.85÷(2.5x0.1+2.5x0.8)
=2.5×0.85÷[2.5×(0.1+0.8)]
=0.85÷0.9
=17/18