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2x+5x+3x/30=-20+100
We move all terms to the left:
2x+5x+3x/30-(-20+100)=0
We add all the numbers together, and all the variables
2x+5x+3x/30-80=0
We add all the numbers together, and all the variables
7x+3x/30-80=0
We multiply all the terms by the denominator
7x*30+3x-80*30=0
We add all the numbers together, and all the variables
3x+7x*30-2400=0
Wy multiply elements
3x+210x-2400=0
We add all the numbers together, and all the variables
213x-2400=0
We move all terms containing x to the left, all other terms to the right
213x=2400
x=2400/213
x=11+19/71
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