Help? Because my teacher doesn't want too
m<ABC = m<EBD = 36 (vertical angles)78 - x + 36 + 3x - 10 = 180 (straight angle)Now solve for x78 - x + 36 + 3x - 10 = 1802x + 68 = 180 - 68 -68 (subtract 68 on both sides)2x = 58 x = 29