解方程: (1)x+27x=5-67x (2)9(x+34)=634

解方程: (1)x+27x=5-67x (2)9(x+34)=634.
2025-06-24 03:17:48
推荐回答(2个)
回答1:

(1)x+

2
7
x=5-
6
7
x,
      1
2
7
x+
6
7
x=5-
6
7
x+
6
7
x,
     2
1
7
x÷2
1
7
=5÷2
1
7

             x=2
1
3


(2)9(x+
3
4
)=
63
4

  9(x+
3
4
)÷9=
63
4
÷9,
          x+
3
4
=
7
4

      x+
3
4
?
3
4
=
7
4
?
3
4

             x=1.

回答2:

 
解:(1)x+27x=5-67x,

127x+67x=5-67x+67x,

217x÷217=5÷217,

x=213;
(2)9(x+34)=634,

9(x+34)÷9=634÷9,

x+34=74,

x+34-34=74-34,

x=1.