(1)0.4:0.25=
12
x ,
0.4X=0.25×12,
X=
0.25×12
0.4 ,
X=7.5;
(2)4X-0.36×5=0.6,
4X-1.8=0.6,
4X-1.8+1.8=0.6+1.8,
4X=2.4,
4X÷4=2.4÷4,
X=0.6.
(1)0.4:0.25=
12
x ,
0.4X=0.25×12,
X=
0.25×12
0.4 ,
X=7.5;
(2)4X-0.36×5=0.6,
4X-1.8=0.6,
4X-1.8+1.8=0.6+1.8,
4X=2.4,
4X÷4=2.4÷4,
X=0.6.