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9.8x+83.67=-10.2x+82.29
We move all terms to the left:
9.8x+83.67-(-10.2x+82.29)=0
We get rid of parentheses
9.8x+10.2x-82.29+83.67=0
We add all the numbers together, and all the variables
20x+1.38=0
We move all terms containing x to the left, all other terms to the right
20x=-1.38
x=-1.38/20
x=-1/14.492753623188
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