Alternativa (B)3X+10° = X+50°
3X - X = 50° - 10°
2X = 40°X = 40°/2
X = 20°X + 50° = 50° + 20° = 70°
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Alternativa (B)
3X+10° = X+50°
3X - X = 50° - 10°
2X = 40°
X = 40°/2
X = 20°
X + 50° = 50° + 20° = 70°