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6=21-9/8x
We move all terms to the left:
6-(21-9/8x)=0
Domain of the equation: 8x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
-(-9/8x+21)+6=0
We get rid of parentheses
9/8x-21+6=0
We multiply all the terms by the denominator
-21*8x+6*8x+9=0
Wy multiply elements
-168x+48x+9=0
We add all the numbers together, and all the variables
-120x+9=0
We move all terms containing x to the left, all other terms to the right
-120x=-9
x=-9/-120
x=3/40
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