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10.3=-12.1+7x
We move all terms to the left:
10.3-(-12.1+7x)=0
We add all the numbers together, and all the variables
-(7x-12.1)+10.3=0
We get rid of parentheses
-7x+12.1+10.3=0
We add all the numbers together, and all the variables
-7x+22.4=0
We move all terms containing x to the left, all other terms to the right
-7x=-22.4
x=-22.4/-7
x=3+1/5
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