643=4*106+n

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Solution for 643=4*106+n equation:



643=4*106+n
We move all terms to the left:
643-(4*106+n)=0
We add all the numbers together, and all the variables
-(n+424)+643=0
We get rid of parentheses
-n-424+643=0
We add all the numbers together, and all the variables
-1n+219=0
We move all terms containing n to the left, all other terms to the right
-n=-219
n=-219/-1
n=+219

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