Question

find the value of x​

Answer 1

Answer:

(a) x = 36

(b) x = 12

Step-by-step explanation:

2. (a) 2x + 3x = 180° (linear pair)

5x = 180 => x = 180/5 = 36

(b) 5x + 7x + 3x = 180° (linear pair)

15x = 180 => x = 180/15 = 12

Answer 2

a) Here,

2x+3x=180° [°.°Linear Pairs]

$2x + 3x = 180° \\ \implies 5x = 180 \\ \implies x = \frac{180°}{5} \\ \implies x = 36°$

.°. x = 36°

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b) Here,

5x+7x+3x= 180° [°.° Linear pairs]

$5x + 7x + 3x = 180° \\ \implies 15x = 180° \\ \implies x = 12°$

.°. x=12°