Question

7x . 7 + 7x = 56

Tìm x

Answer 1

`7x xx7+7x=56`

`=>49x +7x=56`

`=>56x=56`

`=>x=56/56`

`=>x=1`

Vậy `x=1`

Answer 2

`7x . 7 + 7x = 56`

`=> 7x . 7 + 7x . 1= 56`

`=> 7x ( 7 + 1 ) = 56`

`=> 7x . 8 = 56`

`=> 7x = 56/8`

`=> 7x = 7`

`=> x = 7/7`

`=> x = 1`

Answer 3

7x(7+1)=56

7x . 8=56

56x=56

x=56:56=1