Answer:
x = 4
Explanation:
The two angles A and C added together equal 88
5x + 3 + 15x + 5 = 88 Combine like terms
20x + 8 = 88 Subtract 8 from both sides
20x + 8 - 8 = 88 - 8
20x = 80 Divide both sides by 20
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