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4x-28/63-9x=0
We add all the numbers together, and all the variables
-5x-28/63=0
We multiply all the terms by the denominator
-5x*63-28=0
Wy multiply elements
-315x-28=0
We move all terms containing x to the left, all other terms to the right
-315x=28
x=28/-315
x=-4/45
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