3x+2x-5= 180
5x-5= 180
5x=185
X = 37
Besar pelurus COB = BOA
= 2x-5
= 2.37-5
= 74-5
= 69
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Penjelasan dengan langkah-langkah:
COA=180
COB+BOA=180
3x +2x-5=180
5x-5=180
5x=180+5
5x=185
x=185/5
x=37
=====================
Sudut Pelurus COB adalah
BOA
BOA=2x-5
=2(37)-5
=74-5=69
Semoga Membantu
3x+2x-5= 180
5x-5= 180
5x=185
X = 37
Besar pelurus COB = BOA
= 2x-5
= 2.37-5
= 74-5
= 69