(1)
2
3 x-
3
4 =
5
12 ,
2
3 x-
3
4 +
3
4 =
5
12 +
3
4 ,
2
3 x=
7
6 ,
2
3 x÷
2
3 =
7
6 ÷
2
3 ,
x=
7
4 ;
(2)4x-1.6x=36,
2.4x=36,
2.4x÷2.4=36÷2.4,
x=15.
(1)
2
3 x-
3
4 =
5
12 ,
2
3 x-
3
4 +
3
4 =
5
12 +
3
4 ,
2
3 x=
7
6 ,
2
3 x÷
2
3 =
7
6 ÷
2
3 ,
x=
7
4 ;
(2)4x-1.6x=36,
2.4x=36,
2.4x÷2.4=36÷2.4,
x=15.