Question

Seven times complement of a number is 30 less than three times supplement then the numher is

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

Ans- Thus, Let the angle be a  

        Complement angle=(90-a)

        Supplement angle=(180-a)          

Given = 7(90-a) =(180-a)-30

          = 630-7x = 180 – a – 30  

          = 630-7x = 150 – a

        = -7x+x = 150 – 630

        = -6x = -480

        = 6x =  480

        = x = 480/6

        = x = 80