Besar <Abd adalah… *​

• Nilai x

→ 2x + 5° + 3x – 10° = 180°

→ 5x = 180° + 10° – 5°

→ 5x = 185°

→ x = 37°

• Besar

→ 2x + 5°

→ 2(37°) + 5°

→ 74° + 5°

→ 79°

Penyelesaian:

2x+5+3x-10=180°

5x-5=180°

5x=185°

x=37°

—————————————-

2x+5

=3(37)+5

=74+5

=79°