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-4.2x+0.25=-5.9
We move all terms to the left:
-4.2x+0.25-(-5.9)=0
We add all the numbers together, and all the variables
-4.2x+6.15=0
We move all terms containing x to the left, all other terms to the right
-4.2x=-6.15
x=-6.15/-4.2
x=1+1/2.1538461538462
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