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4x-x/2-3=12
We move all terms to the left:
4x-x/2-3-(12)=0
We add all the numbers together, and all the variables
4x-x/2-15=0
We multiply all the terms by the denominator
4x*2-x-15*2=0
We add all the numbers together, and all the variables
-1x+4x*2-30=0
Wy multiply elements
-1x+8x-30=0
We add all the numbers together, and all the variables
7x-30=0
We move all terms containing x to the left, all other terms to the right
7x=30
x=30/7
x=4+2/7
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