Question

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Answer 1

Step-by-step explanation:

1.

a) 5x+x = 90°

=> 6x = 90°

=> x = 15°

b)

5y + 3° + 4y+ 8° + (180-146)° = 180° (Sum of all angles)

=>9y + 11° = 146°

=> 9y = 135°

=> y = 15°