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2x-99=-
We move all terms to the left:
2x-99-(-)=0
We add all the numbers together, and all the variables
2x-99-0=0
We add all the numbers together, and all the variables
2x-99=0
We move all terms containing x to the left, all other terms to the right
2x=99
x=99/2
x=49+1/2
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