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3x+4=7x-46
We move all terms to the left:
3x+4-(7x-46)=0
We get rid of parentheses
3x-7x+46+4=0
We add all the numbers together, and all the variables
-4x+50=0
We move all terms containing x to the left, all other terms to the right
-4x=-50
x=-50/-4
x=12+1/2
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