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16-04-2021
Mathematics

contestada

HELP PLS

find the value of x

HELP PLS find the value of x class=

Respuesta :

16-04-2021

Answer:

x = 5

Step-by-step explanation:

These angles are supplementary so:

9x + 12x + 75 = 180

21x + 75 = 180

21x = 180 - 75

21x = 105

x = 5

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