How do you solve for x in $x + a = b$ $x+a=b$ ?

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Answer 1 · 2017-01-25T23:26:02

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

$x + a - a = b - a$ $x + a - color(red)(a) = b - color(red)(a)$

$x + 0 = b - a$ $x + 0 = b - a$

$x = b - a$ $x = b - a$

How do you solve for x in x+a=bx+a=b ?