Question

the sum of 3 angles (5a+4) , (a-2) , (3a+7) forms a straight angle find the types of angles​

Answer 1

(5a+4)+(a-2) +(3a+7) =180°

5a + 4+a-2+3a+7=180°

9a +9 =180°

9a=180-9

9a=171

a=171÷9

a=19

1. (5a+4) = 5×19+4 = 95+4 =99°
2. (a-2) =19-2= 17°
3. (3a+7)= 3×19 +7 =57+7 =64°

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Answer 2

Step-by-step explanation:

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