问题
解答题
求未知数x. 0.5x-4×0.25=1.25 32:x=
|
答案
(1)0.5x-4×0.25=1.25,
0.5x-1=1.25,
0.5x-1+1=1.25+1,
0.5x=2.25,
0.5x÷0.5=2.25÷0.5,
x=4.5;
(2)32:x=
:5 3
,5 4
x=32×5 3
,5 4
x=40,5 3
x×5 3
=40×3 5
,3 5
x=24.