Question

Please tell me the solution ​

Answer 1

Answer:

Answer is (a) 20°

Step-by-step explanation:

40 + 4x + 3x=180

7x =180-40

X=140/70

X=20°

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Second one = (b)

Side=>AB=DF

Angle=>A=D

Side=>AC=DE

Answer 2

Answer:

40+4x+3x=180

7x=180-40

x=140/7

x=20