Question

1 . Tính 

     48 + | 48 - 174 | + ( - 74 )

2 . Tìm x 

   | 3742| - x = | - 37 |

        Giúp mk nhé ! 

Answer 1

Bài 1:

48 + |48 - 174| + (-74)

= 48 + |-126| + (-74)

= 48 + 126 - 74

= 174 - 74

= 100

Bài 2:

|3742| - x = |-37|

 3742 - x = 37

            x = 3742 - 37

            x = 3705

P/s: Bài 2 mình k chắc nha

Answer 2

\(\text{1) }48+\left|48-174\right|+\left(-74\right)\)

\(=48+\left|-126\right|-74\)

\(=48+126-74\)

\(=174-74\)

\(=100\)

\(\text{2) }\left|3742\right|-x=\left|-37\right|\)

\(\Leftrightarrow3742-x=37\)

\(\Leftrightarrow x=3742-37\)

\(\Leftrightarrow x=3705\)

\(\text{Vậy }x=3705\)