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3x-1+2.3x/7=81
We move all terms to the left:
3x-1+2.3x/7-(81)=0
We add all the numbers together, and all the variables
3x+2.3x/7-82=0
We multiply all the terms by the denominator
3x*7+2.3x-82*7=0
We add all the numbers together, and all the variables
2.3x+3x*7-574=0
Wy multiply elements
2.3x+21x-574=0
We add all the numbers together, and all the variables
23.3x-574=0
We move all terms containing x to the left, all other terms to the right
23.3x=574
x=574/23.3
x=24+8.2222222222224/12.944444444445
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