sophiageffner sophiageffner

21-12-2020
Mathematics

contestada

solve for x please i need help

solve for x please i need help class=

Respuesta :

Hrishii Hrishii

21-12-2020

Answer:

x = 4

Step-by-step explanation:

By exterior angle theorem:

(9x + 1)° + (11x - 2)° = (19x + 3)°

(9x + 1 + 11x - 2)° = (19x + 3)°

(20x - 1)° = (19x + 3)°

20x - 1 = 19x + 3

20x - 19x = 3 +1

x = 4

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