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450+40x=975-65.40x
We move all terms to the left:
450+40x-(975-65.40x)=0
We add all the numbers together, and all the variables
40x-(-65.4x+975)+450=0
We get rid of parentheses
40x+65.4x-975+450=0
We add all the numbers together, and all the variables
105.4x-525=0
We move all terms containing x to the left, all other terms to the right
105.4x=525
x=525/105.4
x=4+73.857142857144/75.285714285716
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