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4.48*10^-13=0.9+2x+x
We move all terms to the left:
4.48*10^-13-(0.9+2x+x)=0
We add all the numbers together, and all the variables
-(3x+0.9)-13+4.48*10^=0
We add all the numbers together, and all the variables
-(3x+0.9)=0
We get rid of parentheses
-3x-0.9=0
We move all terms containing x to the left, all other terms to the right
-3x=0.9
x=0.9/-3
x=-0.9/3
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