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4x-15=17-4
We move all terms to the left:
4x-15-(17-4)=0
We add all the numbers together, and all the variables
4x-15-13=0
We add all the numbers together, and all the variables
4x-28=0
We move all terms containing x to the left, all other terms to the right
4x=28
x=28/4
x=7
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