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3.9(x+3)=50.7
We move all terms to the left:
3.9(x+3)-(50.7)=0
We add all the numbers together, and all the variables
3.9(x+3)-50.7=0
We multiply parentheses
3.9x+11.7-50.7=0
We add all the numbers together, and all the variables
3.9x-39=0
We move all terms containing x to the left, all other terms to the right
3.9x=39
x=39/3.9
x=10
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