Question

Tìm số tự nhiên x ,biết

4x : 17 = 0

7x - 8 = 713

8(x - 3)=0

0 : x = 0

Answer 1

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 => x = 3

Vậy x = 3

d) 0:x = 0

=> \(x\in Z\)

Answer 2

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

Vậy x = 103

c) 8( x- 1 ) = 0

      x - 1 = 0 : 8

      x - 1 = 0

            x = 0 + 1

            x = 1

Vậy x = 1

d) 0 : x = 0

=> x = 0

Vậy x = 0

Answer 3

a)4x:17=0

=>4x=0.17

=>4x=0

=>x=0

b)7x-8=713

=>7x=713+8

=>7x=721

=>x=103

c)8.(x-3)=0

=>x-3=0

=>x=3

d)0:x=0

=>\(x\in Z\)