2(x-16)=8解方程 解方程. 2X+3×0.9=24.7
解方程. 2X+3×0.9=24.7
解方程. 2X+3×0.9=24.7
(1)2X+3×0.9=24.7,2x+2.7=24.7,
2x+2.7-2.7=24.7-2.7,
2x=22,
2x÷2=22÷2,
x=11;(2) 3 8
x-
3 16x=
3 8,
(
-
3 16)x=
3 8,
3 16x=
3 8,
3 16x÷
3 16=
3 8÷
3 16,
x=2;
解方程。 2x+3×0.9=24.7 解:
2x+3×0.9=24.7
解2x+2.7=24.7
2x=24.7-2.7
2x=22
x=11
2x+3乘0.9=24.7是解方程
2X+3乘0.9=24.7 解:- - 2X+2.7=24.7 2X=24.7-2.7 2X=22 X=11
解方程: 5 7 = x 35 2x+3×0.9=24.7
(1) 5 7 = x 35
,
7x=5×35,
7x÷7=5×35÷7,
x=25;
(2)2x+3×0.9=24.7,
2x+2.7=24.7,
2x+2.7-2.7=24.7-2.7,
2x=22,
2x÷2=22÷2,
x=11;
(3)24x-17.6x=23.04,
6.4x=23.04,
6.4x÷6.4=23.04÷6.4,
x=3.6.
解方程: 57=x35 2x+3×0.9=24.7 2
(1)
5 7=
x 35,
7x=5×35,
7x÷7=5×35÷7,
x=25;
(2)2x+3×0.9=24.7,
2x+2.7=24.7,
2x+2.7-2.7=24.7-2.7,
2x=22,
2x÷2=22÷2,
x=11;
(3)24x-17.6x=23.04,
6.4x=23.04,
6.4x÷6.4=23.04÷6.4,
x=3.6.
解方程或比例.①2x+3×0.9=24.7② 3
(1)2x+3×0.9=24.72x+2.7=24.7
2x+2.7-2.7=24.7-2.7
2X=22
2X÷2=22÷2
X=11(2) 3 4
:x=
2 5:24
2 5X=
3 4×24
2 5X÷
2 5=18÷
2 5X=45
解方程或比例.①2x+3×0.9=24.7 &n.
(1)2x+3×0.9=24.7
2x+2.7=24.7
2x+2.7-2.7=24.7-2.7
2X=22
2X÷2=22÷2
X=11
(2)
:x=
2 5:24

2 5
X=
3 4×24
2 5X÷
2 5=18÷
2 5X=45
解方程.2X+3×0.9=24.70
(1)2X+3×0.9=24.7,2x+2.7=24.7,
2x+2.7-2.7=24.7-2.7,
2x=22,
2x÷2=22÷2,
x=11;
(2)0.3:X=17:51,
17x=0.3×51,
17x=15.3,
17x÷17=15.3÷17,
x=0.9.
解方程.2x+3×0.9=24.94
(1)2x+3×0.9=24.9,
2x+2.7=24.9,
2x+2.7-2.7=24.9-2.7,
2x÷2=22.2÷2,
x=11.1;
(2)4x-1.6x=36,
2.4x=36,
2.4x÷2.4=36÷2.4,
x=15;
(3)2x÷5=15,
2x÷5×5=15×5,
2x÷2=75÷2,
x=37.5.