tolong bantu jawab yaa

Mapel : Matematika
Kelas : VII SMP
Bab : Hubungan Sudut

Pembahasan :
Sudut saling berpelurus = 180°
(2m + 10)° + (5m - 5)° = 180°
7m + 5 = 180°
7m = 175
m = 25

< CRS = 5m - 5
< CRS = 5(25) - 5
< CRS = 125 - 5
< CRS = 120°