Question

please answer the question , maths. ch. lines and angles

Answer 1

y + z = 180 ° (linear pair)

let y = 3x

z = 7x

=> 3x + 7x = 180°

=> 10x = 180

=> x = 180/10

x = 18

so, y = 3× 18 = 54

z = 7×18 = 126

now, z = x (alternate interior)

hence, x = 126°

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hope it will help you :)