来自陈薇的问题
(x+1.8x)*75=1.8xy+1.2xy
(x+1.8x)*75=1.8xy+1.2xy
1回答
2020-02-04 19:52
(x+1.8x)*75=1.8xy+1.2xy
(x+1.8x)*75=1.8xy+1.2xy
(x+1.8x)*75=1.8xy+1.2xy
2.8X×75=3XY
210X=3XY
210÷3=Y
Y=70