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It's important to remember that when we have regular numbers and unknowns, we cannot add or subtract them directly.
Let's collect like terms:
5b+2b-7+14=0
7b+7 = 0
Let's move terms
7b = -7
Let's divide by 7
b=-1
And that's the solution!
\( x+7=14 \)
\( x=\text{?} \)
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