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1.21x+0.3=1.51
We move all terms to the left:
1.21x+0.3-(1.51)=0
We add all the numbers together, and all the variables
1.21x-1.21=0
We move all terms containing x to the left, all other terms to the right
1.21x=1.21
x=1.21/1.21
x=1
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