Best answers for 1 and 2 will be marked as Brainliest!!!!
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Step-by-step explanation:
1. angle 1=(30-a)°
angle 2=(125+2a)°
it is given that they both are supplement to each other which means
angle 1+angle 2=180°
(30-a)°+(125+2a)°=180°
30°-a°+125°+2a°=180°
a°=180°-125°-30°
a°=180°-150°
a°=30°
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