问题 解答题
9:x=
1
3
1
4
4.25x-1.75×2=5.
答案

9:x=

1
3
1
4

1
3
x=
1
4
×9,

1
3
x×3=
9
4
×3,

x=

27
4

4.25x-1.75×2=5.

4.25x-3.5=5,

4.25x-3.5+3.5=5+3.5,

4.25x=8.5,

4.25x÷4.25=8.5÷4.25,

x=2.

问答题
判断题