解方程 (1)x+39/14=5.375 (2)x-74/5=42/7 (3)3/4-0.6+x=11/20 (4)8-x=7.5-32/3.
问题描述:
解方程
(1)x+3
=5.3759 14
(2)x-7
=44 5
2 7
(3)
-0.6+x=13 4
1 20
(4)8-x=7.5-3
. 2 3
答
(1)x+3914=5.375 x+3914-3914=5.375-3914 x=14156;(2)x-745=427 x-745+745=427+745  ...