Question

Tìm số tự nhiên x, biết:   

2^7 + (x + 19) = 900 : 6

Answer 1

\(2^7+\left(x+19\right)=\dfrac{900}{6}\)

\(\Rightarrow128+x+19=150\)

\(\Rightarrow x=150-128-19\)

\(\Rightarrow x=3\)

Answer 2

\(2^7+\left(x+19\right)=900:6\)

\(128+\left(x+19\right)=150\)

\(\left(x+19\right)=150-128\)

\(x+19=22\)

\(x=22-19\)

\(x=3\)

\(Vậy\)\(x=3\)

Answer 3

`2^{7}+(x+19)=900:6`

`->128+x+19=150`

`->x+147=150`

`->x=150-147`

`->x=3` (thỏa mãn yêu cầu đề bài)

Answer 4

Ta có: \(2^7+\left(x+19\right)=900:6\)

\(\Leftrightarrow x+19+128=150\)

hay x=3