解方程. (1)x+5%=0.42÷10% (2)5/8:x=11/2:(5-23/5)
问题描述:
解方程.
(1)x+5%=0.42÷10%
(2)
:x=15 8
:(5-21 2
) 3 5
答
(1)x+5%=0.42÷10% x+5%=4.2 x+5%-5%=4.2-5% x=4.15...