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-0.3x+5.55=-0.8x+3.55
We move all terms to the left:
-0.3x+5.55-(-0.8x+3.55)=0
We get rid of parentheses
-0.3x+0.8x-3.55+5.55=0
We add all the numbers together, and all the variables
0.5x+2=0
We move all terms containing x to the left, all other terms to the right
0.5x=-2
x=-2/0.5
x=-4
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