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a)7x-8=713
7x =713+8
7x =721
x =721:7
x =103
Vậy x=103
b)8(x-3)=0
x-3=0:8
x-3=0
x=0+3
x=3
Vậy x=0
4x:7=0
4x =0*7
4x =0
x =0:4
x =0
Vậy x=0
![](https://rs.olm.vn/images/avt/0.png?1311)
a. 4x : 17 = 0 <=> 4x = 0.17 = 0 => x = 0
b. 7x- 8 =713 <=> 7x = 713 + 8 = 721 => x = 721 : 7 = 103
c. 8 ( x - 3) = 0 <=> x - 3 = 0: 8 = 0 => x = 3
d. 0 : x = 0 với mọi x khác 0
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 4X : 17 = 0
4X= 0 x17
4X = 0
X = 0 : 4
X = 0
Vậy X = 0
b) 7X - 8 = 713
7X = 713 + 8
7X = 721
X = 721 : 7
X = 103
Vậy X = 103
c) 8 ( X - 3 ) = 0
X - 3 = 0 : 8
X - 3 = 0
X = 0 + 3
X = 3
Vậy X = 3
a. 4x : 17 = 0
=> 4x=0.17
=> 4x=0
=> x=0:4
=> x=0
b. 7x - 8 = 713
=> 7x=713+8
=> 7x = 721
=> x = 721 : 7
=> x= 103
c. 8(x - 3) = 0
=> x-3=0:8
=> x-3=0
=> x=0+3
=> x=3
![](https://rs.olm.vn/images/avt/0.png?1311)
4x:17=0
4x=0.17
4x=0
x=0:4
x=0
7x-8=713
7x=713+8
7x=721
x=721:7
x=103
8(x-3)=0
x-3=0:8
x-3=0
x=0+3
x=3
![](https://rs.olm.vn/images/avt/0.png?1311)
7x-8=713 8(x-3)=0 4x:17=0
7x=713+8 =>x-3=0 =>4x=0
7x=721 =.x=3 =>x=0
x=721:7
x=103
7x-8=713 8(x-3)=0 4x÷17=0
7x=713+8 x-3=0÷8 4x=17×0
7x=721 x-3=0 4x=0
x=721÷7 x=3+0 ; x=0÷4
x=103 x=3 x=0
a) 7x - 8 = 713
7x = 713 + 8
7x = 721
x = 721 : 7
x = 103
b) 8 ( x - 3 ) = 0
x - 3 = 0 : 8
x - 3 = 0
x = 0 + 3
x = 3
c) 4x : 17 = 0
4x = 0 . 17
4x = 0
x = 0 : 4
x = 0
d) 96 - 3 ( x + 1 ) = 42
3 ( x + 1 ) = 96 - 42
3 ( x + 1 ) = 54
x + 1 = 18
x = 17