Question

(25−(𝑥+1,85)) ∶ 3=7

Answer 1

(25-(x+1,85)):3=7

<=>25-(x+1,85)=7.3

<=>25-x-1,85=21

<=>(25-1,85)-x=21

<=>23,75-x=21

<=>-x=21-23.75

<=>-x=-2,75

<=>x=2.75

Vậy x=2,75

Answer 2

Ta có: \(\left[25-\left(x+1.85\right)\right]:3=7\)

\(\Leftrightarrow25-\left(x+1.85\right)=21\)

\(\Leftrightarrow x+1.85=4\)

hay x=2,15