2(x+7) =6x+9-4x linear equation
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2(x+7) = 6x + 9 - 4x
2x + 14 = 2x + 9
2x - 2x = 9 - 14
0 = -5
5 = 0
⇒5
∴ 2(x+7) = 6x + 9 - 4x
⇒ 5 = 0 OR 5
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