Answer:
x = b - 2
Explanation:
Given :
3x + 6 - 3b = 0
Subtract (6 - 3b) on both sides :
3x + 6 - 3b - (6 - 3b) = 0 - (6 - 3b)
3x + 6 - 6 + 3b - 3b = -6 + 3b
3x = 3b - 6
Divide throughout by 3 :
1/3 x 3x = 1/3 x (3b - 6)
Done!
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