问题
解答题
解方程(比例) 4x+3×0.7=6.5 x:8=
|
答案
(1)4x+3×0.7=6.5,
4x+2.1=6.5,
4x+2.1-2.1=6.5-2.1,
4x=4.4,
4x÷4=4.4÷4,
x=1.1;
(2)x:8=
:13 4
,1 5
1
x=8×1 5
,3 4
1
x=6,1 5
1
x×1 5
=6×5 6
,5 6
x=5.
解方程(比例) 4x+3×0.7=6.5 x:8=
|
(1)4x+3×0.7=6.5,
4x+2.1=6.5,
4x+2.1-2.1=6.5-2.1,
4x=4.4,
4x÷4=4.4÷4,
x=1.1;
(2)x:8=
:13 4
,1 5
1
x=8×1 5
,3 4
1
x=6,1 5
1
x×1 5
=6×5 6
,5 6
x=5.