3x+6 =2
a
3x+6 =2
a
3x+6=2a
subtracting 6 from both sides
3x+6-6 =2a-6
thus 3x = 2a-6
dividing both sides by 3
3x/3=(2a-6)/3
hence x=(2/3)a-6/3
x=(2/3)a- 2
3x = 2a - 6
x = (2a - 6) / 3
x = 2a/e - 2

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Vaibhav S.