−8,77s+(4,4−7)=20+4,4−8,97s
−8,77s+(-2,6)=24,4−8,97s
−8,77s-2,6=24,4−8,97s
−8,77s+8,97s=24,4+2,6
0,2s=27
s=135
−8,77s+(4,4−7)=20+4,4−8,97s
−8,77s+(-2,6)=24,4−8,97s
−8,77s-2,6=24,4−8,97s
−8,77s+8,97s=24,4+2,6
0,2s=27
s=135