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x-(0.2*x)=1297
We move all terms to the left:
x-(0.2*x)-(1297)=0
We add all the numbers together, and all the variables
x-(+0.2x)-1297=0
We get rid of parentheses
x-0.2x-1297=0
We add all the numbers together, and all the variables
0.8x-1297=0
We move all terms containing x to the left, all other terms to the right
0.8x=1297
x=1297/0.8
x=1621+0.2/0.8
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