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-6.5+1.5(3.1x-4.2)=30
We move all terms to the left:
-6.5+1.5(3.1x-4.2)-(30)=0
We add all the numbers together, and all the variables
1.5(3.1x-4.2)-36.5=0
We multiply parentheses
4.5x-6.3-36.5=0
We add all the numbers together, and all the variables
4.5x-42.8=0
We move all terms containing x to the left, all other terms to the right
4.5x=42.8
x=42.8/4.5
x=9+1/1.9565217391304
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