Question

Answer this question

Answer 1

x+x+30=180 linear pair
2x=180-30=150
x=150/2=75
so x is 75 and x+30 is 150

Answer 2

$x + x + 30 = 180 \\ 2x + 30 = 180 \\ 2x = 180 - 30 \\ 2x = 150 \\ x = 150 \div 2 \\ x = 75$
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