For the first one,
x = 10.
For the second one,
x = 12
Step-by-step explanation:
a. x = 30° (180-70-80)
b. <FGA = 80°
c. vertical angles
Answer:
The missing number (i.e. the coefficient of x) is 5.
5x - 8 - 9x = -4x + 8
-4x - 8 = -4x + 8
-8 ≠ 8
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