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2.1+x/4=-4.3
We move all terms to the left:
2.1+x/4-(-4.3)=0
We add all the numbers together, and all the variables
x/4+6.4=0
We multiply all the terms by the denominator
x+(6.4)*4=0
We add all the numbers together, and all the variables
x+25.6=0
We move all terms containing x to the left, all other terms to the right
x=-25.6
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