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50+30x=48+40x
We move all terms to the left:
50+30x-(48+40x)=0
We add all the numbers together, and all the variables
30x-(40x+48)+50=0
We get rid of parentheses
30x-40x-48+50=0
We add all the numbers together, and all the variables
-10x+2=0
We move all terms containing x to the left, all other terms to the right
-10x=-2
x=-2/-10
x=1/5
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