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x-0.4x=30.36
We move all terms to the left:
x-0.4x-(30.36)=0
We add all the numbers together, and all the variables
0.6x-30.36=0
We move all terms containing x to the left, all other terms to the right
0.6x=30.36
x=30.36/0.6
x=50+0.36/0.6
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