小学五年级 数学 急! 请详细解答,谢谢! (4 21:2:33)解下列方程6X+6x8=72(X+8)x6=728(X-2.6)=328X-8x2.6=320.3x7+4X=12.51.6X-24x2=36

6x=24
x=4
6x+48=72
x=4
8x-20.8=32
8x=52.8
x=6.6
一样
2.1+4x=12.5
4x=10.4
x=2.6
1.6x=48+36
1.6x=84
x=21/4

① 6X+6x8=72
6x+48=72-48
6X=24
x=4

4
20
6.6
30
2.6
52.2

1.6X+6x8=72
6x+48=72
6x=24
x=4
2.(X+8)x6=72
6x+48=72
6x=24
x=4
3.8(X-2.6)=32
8x-20.8=32
8x=52.8
x=6.6
4.8X-8x2.6=32
8x-20.8=32
8x=52.8
x=6.6
5.0.3x7+4X=12.5
2.1+4x=12.5
4x=10.4
x=2.6
6.1.6X-24x2=36
1.6x-48=36
1.6x=84
x=52.5

x=4
x=4
x=6.6
x=6.6
x=2.6
x=52.5

6X+6*8=72 [X+8]*6=72
6X+48=72 6X+48=72
6X=24 6X=24
X=4 X=4
8(X-2.6)=32 8X-8x2.6=32
8X-20.8=32 8X-20.8=32
8X=52.8 8X=52.8
X=6.6 X=6.6
0.3x7+4X=12.5 1.6X-24x2=36
2.1+4X=12.5 1.6X-48=36
4X=10.4 1.6X=84
X=2.6 X=52.5

6X+6x8=72
6x+48=72
6x=72-48
6x=24
x=4

(1) 6x+48=72
6x=72-48
6x=24
x=4
(2) x+8=12
x=4
(3) x-2.6=4
x=4+2.6
x=6.6
(4) 8x-20.8=32
8x=32+20.8
8x=52.8
x=6.6
(5) 2.1+4x=12.5
4x=12.5-2.1
4x=10.4
x=2.6
(6) 1.6x-48=36
1.6x=36+48
1.6x=84
x=52.2

6X+6x8=72
6X=72-48
6X=24
X=4

6x+48=72
6x=72-48
x=24除6
x=4
6x+6乘8=72
6x=72-48
x=24除6
x=4
8x-8乘2.6=32
8x=32+20.8
x=52.8除8
x=4.6
8x-20.8=32
8x=32+20.8
x=52.8除8
x=6.8
2.1+4x=12.5
4x=12.5-2.1
x=10.4除4
x=2.6
1.6x-48=36
1.6x=36+48
x=84除1.6
x=52.5

(1)6x+6*8=72 (2)(x+8)*6=72 (3)8(x-2.6)=32
解:6x+48=72 解:x*6+8*6=72 解:x-2.6=32/8
6x=72-48 6x+48=72 x-2.6=4
6x=24 6x=72-8 x=2.6+4
x=24/6 6x=24 x=6.6
x=4 x=24/6
x=4
(4)8x-8*2.6=32 (5)0.3*7+4x=12.5 (6)1.6x-24*2=36
解:8x-20.8=32 解:2.1+4x=12.5 解:1.6x-48=36
8x=32+20.8 4x=12.5-2.1 1.6x=36+48
8x=50.8 4x=10.4 1.6x=84
x=50.8/8 x=10.4/4 x=84/1.6
x=6.35 x=2.6 x=52.5

1.6x+48=72
6x=24
x=4
2.x+8=12
x=4
3.x-2.6=4
x=6.6
4.8x-20.8=32
8x=52.8
x=6.6
5.2.1+4x=12.5
4x=10.4
x=2.6
6.1.6x-48=36
1.6x=84
x=52.5