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1x-(0.3x)=2640
We move all terms to the left:
1x-(0.3x)-(2640)=0
We add all the numbers together, and all the variables
1x-(+0.3x)-2640=0
We add all the numbers together, and all the variables
x-(+0.3x)-2640=0
We get rid of parentheses
x-0.3x-2640=0
We add all the numbers together, and all the variables
0.7x-2640=0
We move all terms containing x to the left, all other terms to the right
0.7x=2640
x=2640/0.7
x=3771+0.30000000000018/0.7
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