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3(1.8)+2.50x=6.80
We move all terms to the left:
3(1.8)+2.50x-(6.80)=0
We add all the numbers together, and all the variables
2.50x+3(1.8)-(6.8)=0
We add all the numbers together, and all the variables
2.50x-1.4=0
We move all terms containing x to the left, all other terms to the right
2.50x=1.4
x=1.4/2.50
x=1/1.7857142857143
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