Question

va rog, imi trebuie rezolvarea ​

Answer 1

Răspuns:

<ABC+<BCA+<BAC=180°

<ABC=180°-2x-18

<BCA=180°-3x-24

<BAC=180°-4x+15

=>180°×3-2x-18-3x-24-4x+15=180°

-9x-42+15=-2×180°

-9×-27=-360

9×+27=360

9x=333

x=37

=>c)37

Answer 2

Răspuns:

x=37

≈ ≈ ≈ ≈ ≈ ≈ ≈ ≈ ≈ ≈