题目内容

解方程.
1
6
4
5
=x:48
(1+
2
3
)x=6.25
0.26×3-0.9x=6%
(1)
1
6
4
5
=x:48,
4
5
x=
1
6
×48,
4
5
4
5
=
1
6
×48÷
4
5

x=10;

(2)(1+
2
3
)x=6.25,
5
3
x=6.25,
5
3
5
3
=6.25÷
5
3

x=3.75;

(3)0.26×3-0.9x=6%,
0.78-0.9x=6%,
0.78-0.9x+0.9x=6%+0.9x,
0.78=6%+0.9x,
0.78-6%=6%+0.9x-6%,
0.72=0.9x,
0.72÷0.9=0.9x÷0.9,
x=0.8.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网