book Maths Puzzle Numerical Ability

The supplement of an angle is 20 degrees larger that the angle. Find the measure of the angle. Thanks for the help!

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Hi,
I need to simplify this and show my work, and I have not had this in a while. I have my answer, but am not sure if it is correct! Thank you kindly!

3 Radical Sign 32 (NOTE; THE RADICAL SIGN IS AROUND THE 32 I HOPE I WROTE THIS CORRECTLY) how do you make this a negative exponents 7/cd