Cine ma ajuta are coroana juurr repede!!

Răspuns:
Explicație pas cu pas:
a) A+B=48
A ≡ B => A=B=48:2=24 grade
b) 2*A+B=120
A≡B => 2*A+B=3*A=120 => A=120:3=40 grade
c) 3*A+2*B=121
A≡B => 3*A+2*B=3*A+2*A=5*A=121 => A=121:5=24 grade 12 minute