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x-(.3x)=620
We move all terms to the left:
x-(.3x)-(620)=0
We add all the numbers together, and all the variables
x-(+.3x)-620=0
We get rid of parentheses
x-.3x-620=0
We add all the numbers together, and all the variables
0.7x-620=0
We move all terms containing x to the left, all other terms to the right
0.7x=620
x=620/0.7
x=885+0.5/0.7
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