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13x-21x=1/4
We move all terms to the left:
13x-21x-(1/4)=0
We add all the numbers together, and all the variables
13x-21x-(+1/4)=0
We add all the numbers together, and all the variables
-8x-(+1/4)=0
We get rid of parentheses
-8x-1/4=0
We multiply all the terms by the denominator
-8x*4-1=0
Wy multiply elements
-32x-1=0
We move all terms containing x to the left, all other terms to the right
-32x=1
x=1/-32
x=-1/32
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