0.7x+x=4.5x 解方程
问题描述:
0.7x+x=4.5x 解方程
答
0.7x + x = 4.5x
0.7x + x - 4.5x = 0
(0.7 + 1 - 4.5)x = 0
-2.8x = 0
x = 0