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9x+4x=30+5
We move all terms to the left:
9x+4x-(30+5)=0
We add all the numbers together, and all the variables
9x+4x-35=0
We add all the numbers together, and all the variables
13x-35=0
We move all terms containing x to the left, all other terms to the right
13x=35
x=35/13
x=2+9/13
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