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1234567890987654321-0987654321234567890=x
We move all terms to the left:
1234567890987654321-0987654321234567890-(x)=0
We add all the numbers together, and all the variables
-1x+246913569753086431=0
We move all terms containing x to the left, all other terms to the right
-x=-246913569753086431
x=-246913569753086431/-1
x=+2.4691356975309E+17
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