Find x if (7x - 20)° and (3x + 20)° form a linear pair.

Type: MCQ • Marks: 1

A. 15°

B. 18°

C. 20°

D. 25°

Explanation

Sum = 180° => 7x - 20 + 3x + 20 = 180° => 10x = 180° => x = 18°.

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Class 7th Ganita Prakash 1

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