melanienievess melanienievess

14-11-2020
Mathematics

contestada

Find the value of x.
2x + 30
3x - 5
X - 15
X=

Find the value of x 2x 30 3x 5 X 15 X class=

Respuesta :

mhanifa mhanifa

15-11-2020

Answer:

x = 50

Step-by-step explanation:

Angle 2x + 30 is exterior which is equal to sum of non-adjacent interior angles:

3x + 30 = 3x - 5 + x - 15
3x + 30 = 4x - 20
4x - 3x = 30 + 20
x = 50

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