问题
解答题
解方程. ①x+
②1.3:x=0.26:0.32. |
答案
(1)x+
x=42,2 5
x=42,7 5
x×7 5
=42×5 7
,5 7
x=30,
(2)1.3:x=0.26:0.32.
0.26x=1.3×0.32,
0.26x÷0.26=0.416÷0.26,
x=1.6.
解方程. ①x+
②1.3:x=0.26:0.32. |
(1)x+
x=42,2 5
x=42,7 5
x×7 5
=42×5 7
,5 7
x=30,
(2)1.3:x=0.26:0.32.
0.26x=1.3×0.32,
0.26x÷0.26=0.416÷0.26,
x=1.6.