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7x/2+1=21x
We move all terms to the left:
7x/2+1-(21x)=0
We add all the numbers together, and all the variables
-21x+7x/2+1=0
We multiply all the terms by the denominator
-21x*2+7x+1*2=0
We add all the numbers together, and all the variables
7x-21x*2+2=0
Wy multiply elements
7x-42x+2=0
We add all the numbers together, and all the variables
-35x+2=0
We move all terms containing x to the left, all other terms to the right
-35x=-2
x=-2/-35
x=2/35
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