问题
解答题
解方程. ①
②x:0.2=
|
答案
(1)
-5x=0.125,3 8
-5x+5x=0.125+5x,3 8
-0.125=0.125+5x-0.125,3 8
0.25=5x,
0.25÷5=5x÷5,
x=0.05;
(2)x:0.2=
,5 8
8x=0.2×5,
8x=1,
8x÷8=1÷8,
x=0.125.
解方程. ①
②x:0.2=
|
(1)
-5x=0.125,3 8
-5x+5x=0.125+5x,3 8
-0.125=0.125+5x-0.125,3 8
0.25=5x,
0.25÷5=5x÷5,
x=0.05;
(2)x:0.2=
,5 8
8x=0.2×5,
8x=1,
8x÷8=1÷8,
x=0.125.