X-0.55倍= 0.9 4X-3.9 = 4.5解方程
问题描述:
X-0.55倍= 0.9 4X-3.9 = 4.5解方程
答
X-0.55倍= 0.9 0.45倍= 0.9×2 = 4X-3.9 = 4.5 4X = 8.4×2.1 =
X-0.55倍= 0.9 4X-3.9 = 4.5解方程
X-0.55倍= 0.9 0.45倍= 0.9×2 = 4X-3.9 = 4.5 4X = 8.4×2.1 =