Question

find x when aob is a straigt line the angles are 3x+20 and 4x-36​

Answer 1

Answer:

3x+20 = 104°

4x-36 = 76°

Step-by-step explanation:

As the AOB is a line.

(3x + 20) + (4x - 36) = 180° [Linear pair]

(3x + 4x) + (20 - 36) = 180°

7x + (-16) = 180°

7x - 16 = 180°

7x = 180° + 16

7x = 196

x = 196/7

x = 28°

3x + 20 = (3 * 28) + 20

= 84 + 20

= 104°

4x - 36 = (4 * 28) - 36

= 112 - 36

= 76°

Let's check

76° + 104° =180°

180° = 180°

L. H. S = R. H.S

Hence, verified

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