How do you solve $x+15=30$ ?

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Answer 1 · 2018-03-13T12:47:19

Subtract $color(red)(15)$ from each side of the equation to solve for $x$ while keeping the equation balanced:

$x + 15 - color(red)(15) = 30 - color(red)(15)$

$x + 0 = 15$

$x = 15$

How do you solve x+15=30x+15=30?