问题
解答题
当x=______时,14-x=0;当x=______时,x+2.8=5.
答案
(1)14-x=0
14-x+x=0+x
x=14;
(2)x+2.8=5
x+2.8-2.8=5-2.8
x=2.2
故答案为:14,2.2.
当x=______时,14-x=0;当x=______时,x+2.8=5.
(1)14-x=0
14-x+x=0+x
x=14;
(2)x+2.8=5
x+2.8-2.8=5-2.8
x=2.2
故答案为:14,2.2.