问题
解答题
解方程(或比例). 3.2x-4×3=52
|
答案
(1)3.2x-4×3=52,
3.2x-12=52,
3.2x-12+12=52+12,
3.2x=64,
3.2x÷3.2=64÷3.2,
x=20;
(2)
:1 4
=x:10,1 8
x=1 8
×10,1 4
x=1 8
,5 2
x×8=1 8
×8,5 2
x=20.
解方程(或比例). 3.2x-4×3=52
|
(1)3.2x-4×3=52,
3.2x-12=52,
3.2x-12+12=52+12,
3.2x=64,
3.2x÷3.2=64÷3.2,
x=20;
(2)
:1 4
=x:10,1 8
x=1 8
×10,1 4
x=1 8
,5 2
x×8=1 8
×8,5 2
x=20.