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2.9(3x+2)=45
We move all terms to the left:
2.9(3x+2)-(45)=0
We multiply parentheses
8.7x+5.8-45=0
We add all the numbers together, and all the variables
8.7x-39.2=0
We move all terms containing x to the left, all other terms to the right
8.7x=39.2
x=39.2/8.7
x=4+1/1.9772727272727
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