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6.9(x+2)=103.5
We move all terms to the left:
6.9(x+2)-(103.5)=0
We add all the numbers together, and all the variables
6.9(x+2)-103.5=0
We multiply parentheses
6.9x+13.8-103.5=0
We add all the numbers together, and all the variables
6.9x-89.7=0
We move all terms containing x to the left, all other terms to the right
6.9x=89.7
x=89.7/6.9
x=13
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