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Vanboom · Answer 1 · 2018-03-17T08:35:25+0000

Good evening.

Let's subtract 4 from both sides and simplify the -3y + 3y:

$\mathsf{-3y+3y+4-4=4-4}\\ \\ \mathsf{(-3+3)y = 0}\\ \\ \mathsf{0y=0}$

Any value for y will make this sentence valid. Therefore, the equation has infinite solutions.

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