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0.15x-0.15=0.21
We move all terms to the left:
0.15x-0.15-(0.21)=0
We add all the numbers together, and all the variables
0.15x-0.36=0
We move all terms containing x to the left, all other terms to the right
0.15x=0.36
x=0.36/0.15
x=2+0.06/0.15
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