If 2x=y then find the value of y
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(180-x)= 2x(as x and y form a linear pair)
180= 2x+x
3x= 180
x= 180/3
x= 60
y = 2×60
= 120
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given that 2x = y......(1)
AB is a straight line
angle x + angle y = 180
x + 2x = 180( because 2x = y)
3x = 180
=> x = 180/3
=> x = 60
put in first
y = 2*60
y= 120
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