Question

Determine o valor de X e Y na figura a seguir:

Answer 1

16x - 45 = 12x - 15
16x - 12x = -15 + 45
4x = 30
x = 30/4 =7.5 *****

16x - 45 = 16 ( 7.5) - 45  = 120 - 45 =75 ****

y = 75

y + 75 = 180
y = 180 - 75 =105 graus
prova
75 + 75 + 105 + 105 = 360 graus