Question 485677
4x + 3 + x - 8 = 90
5x - 5 = 90
5x = 95
x = 19
To check
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4(19) 76 + 3 = 79 degrees angle 1
19-8 
= 11 degrees  angle 2
79 degrees + 11 degrees = 90 degrees.
Cleomenius.