Question

tìm x thuộc N bít

8 . (x- 5) + 17= 17

Answer 1

\(8\left(x-5\right)+17=17\)

\(\Leftrightarrow8\left(x-5\right)=0\)

\(\Leftrightarrow x-5=0\)

\(\Leftrightarrow x=5\)

Vậy ...

Answer 2

8 . ( x - 5 ) + 17 = 17

8 . ( x - 5 ) = 17 - 17

8 . ( x - 5 ) = 0

x - 5 = 0 : 8

x - 5 = 0

x = 0 + 5

x = 5