Respuesta :
Answer:
x = 12
Step-by-step explanation:
Supplementary angles, sum = 180
10x - 20 + 6x + 8 = 180
16x - 12 = 180
16x = 192
x = 12
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➷ Angles on a straight line equal 180
Therefore:
10x - 20 + 6x + 8 = 180
Simplify:
16x - 12 = 180
Add 12 to both sides:
16x = 192
Divide both sides by 16:
x = 12
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