2.5+2.5×1.65 38.4-38.4×0.6= = = == =
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2.5+2.5×1.6538.4-38.4×0.6======2.5+2.5×1.6538.4-38.4×0.6======2.5+2.5×1.6538.4-38.4×0.6======2.5+2.5
2.5+2.5×1.65 38.4-38.4×0.6= = = == =
2.5+2.5×1.65 38.4-38.4×0.6
= =
= =
= =
2.5+2.5×1.65 38.4-38.4×0.6= = = == =
2.5+2.5×1.65 38.4-38.4×0.6
=2.5X(1+1.65) = 38.4X(1-0.6)
=2.5X2.65 =38.4X 0.4
=6.625 =15.36
2.5+2.5×1.65 38.4-38.4×0.6= = = == =
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x的5倍减去2.5除5的商,差是38,求X.下列方程错误的是A 5X-5÷2.5＝38b 5X-38＝5÷2.5C 5X+38=5÷2.5d 5x=38＋5÷2.5