How do you simplify $7 x + 7 y = 7 (x + ?)$ $7x + 7y = 7 (x +? )$ ?

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Answer 1 · 2015-07-06T11:00:45

You can divide everything by $7$ $7$

$\to x + y = x + ?$ $->x+y=x+?$

Then you can subtract $x$ $x$ on both sides:
$\to y = ?$ $->y=?$

How do you simplify 7x+7y=7(x+?)7x + 7y = 7 (x +? )?