解方程：2X +2.5 = 17.5 3X-2 = 48 6X-1.5X = 45 12X-3?还采用5 = 1.5注：写作过程中,一好百点

分类: 作业答案 • 2021-12-29 16:23:59

问题描述：

答

①2倍+2.5 X =
17.55.5x = 17.5倍= 17.5? 5倍= 3②3X-2 = 483x = 48 +23 = 50X = 50/3x =
16和3分之2③2X-3X1.5 = 1.52 = 1.5 +3 X1 .52 = 1.5x4x = 1.5x2x = 3