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15x-2(3x+6)=1.3
We move all terms to the left:
15x-2(3x+6)-(1.3)=0
We add all the numbers together, and all the variables
15x-2(3x+6)-1.3=0
We multiply parentheses
15x-6x-12-1.3=0
We add all the numbers together, and all the variables
9x-13.3=0
We move all terms containing x to the left, all other terms to the right
9x=13.3
x=13.3/9
x=1+3.3076923076923/6.9230769230769
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