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4=0.3x-0.5x-6
We move all terms to the left:
4-(0.3x-0.5x-6)=0
We add all the numbers together, and all the variables
-(-0.2x-6)+4=0
We get rid of parentheses
0.2x+6+4=0
We add all the numbers together, and all the variables
0.2x+10=0
We move all terms containing x to the left, all other terms to the right
0.2x=-10
x=-10/0.2
x=-50
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