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7.7+3x-12x=3x+1
We move all terms to the left:
7.7+3x-12x-(3x+1)=0
We add all the numbers together, and all the variables
-9x-(3x+1)+7.7=0
We get rid of parentheses
-9x-3x-1+7.7=0
We add all the numbers together, and all the variables
-12x+6.7=0
We move all terms containing x to the left, all other terms to the right
-12x=-6.7
x=-6.7/-12
x=1/1.7910447761194
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