Respuesta :

Answer:

5x + 10 + 55 = 90

5x = 90 -55 - 10

5x = 90 - 65

5x = 25

5x ÷ 5 = 25 ÷ 5

x = 5

Answer:

x=5

Step-by-step explanation:

If you replace the x in (5x+10)º

(5x+10)º

[5(5)+10]º

[25+10]º

= 35º

Combine the sums for angles M and R

55º+35º

=90º

Therefore, the answer is x=5.

Brainliest pls?