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0.8(x+300)=0.84x-64
We move all terms to the left:
0.8(x+300)-(0.84x-64)=0
We multiply parentheses
0.8x-(0.84x-64)+240=0
We get rid of parentheses
0.8x-0.84x+64+240=0
We add all the numbers together, and all the variables
-0.04x+304=0
We move all terms containing x to the left, all other terms to the right
-0.04x=-304
x=-304/-0.04
x=+7600
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