Question

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Answer 1

Answer:

x = 20

Step-by-step explanation:

The 3 angles lie on a straight line and sum to 180° , that is

3x + 80 + 2x = 180

5x + 80 = 180 ( subtract 80 from both sides )

5x = 100 ( divide both sides by 5 )

x = 20

Answer 2

Answer:

Here,3x°+80°+2x=180° [Angles on a line]

or,3x°+2x°+80°=180°

or,5x°+80°=180°

or,5x°=180°-80°

or,5x°=100°

or,x°=100/5

Therefore,x°=20°