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-428=-219-10x
We move all terms to the left:
-428-(-219-10x)=0
We add all the numbers together, and all the variables
-(-10x-219)-428=0
We get rid of parentheses
10x+219-428=0
We add all the numbers together, and all the variables
10x-209=0
We move all terms containing x to the left, all other terms to the right
10x=209
x=209/10
x=20+9/10
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