Question

a. x - 87 : 29 = 3

b. 52+(165-x)=143

Tìm x

Answer 1

`a)x-87:29=3`

`x-3=3`

`x=3+3=6`

`b)52+(165-x)=143`

`165-x=143-52=91`

`x=165-91=74`

Answer 2

a. x - 87 : 29 = 3

    x - 3 = 3

    x      = 3 + 3

   x       = 6

b. 52+(165-x)=143

            165-x = 143 - 52

            165-x = 91

                   x = 165 - 91

                   x = 74.

Answer 3

a/ \(\Leftrightarrow x-3=3\Leftrightarrow x=6\).

b/ \(\Leftrightarrow165-x=91\Leftrightarrow x=74\)

Answer 4

`a, x - 3 = 3`

`=> x = 6`

`b, 52 + (165 - x) = 143`

`=> 165 - x = 91`

`=> x = 74`