解方程.14:112=8:x &nb...

解方程.14:112=8:x 4x+16=21.68.
2025-06-28 08:27:33
推荐回答(1个)
回答1:

(1)

1
4
1
12
=8:x,
            
1
4
x=
1
12
×8,
            
1
4
x=
2
3

               x=
2
3
÷
1
4

               x=
8
3


(2)4x+16=21.68,
  4x+16-16=21.68-16,
        4x=5.68,
         x=5.68÷4,
         x=1.42.