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x+1+2.1-0.21x=0.526
We move all terms to the left:
x+1+2.1-0.21x-(0.526)=0
We add all the numbers together, and all the variables
0.79x+2.574=0
We move all terms containing x to the left, all other terms to the right
0.79x=-2.574
x=-2.574/0.79
x=-3+0.204/0.79
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