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(45-2x)(24-2x)+(45-2x)(x)-2+(24-2x)(x)-2=0
We add all the numbers together, and all the variables
(-2x+45)(-2x+24)+(-2x+45)x+(-2x+24)x-2-2=0
We add all the numbers together, and all the variables
(-2x+45)(-2x+24)+(-2x+45)x+(-2x+24)x-4=0
We multiply parentheses
-2x^2-2x^2+(-2x+45)(-2x+24)+45x+24x-4=0
We multiply parentheses ..
-2x^2-2x^2+(+4x^2-48x-90x+1080)+45x+24x-4=0
We add all the numbers together, and all the variables
-4x^2+(+4x^2-48x-90x+1080)+69x-4=0
We get rid of parentheses
-4x^2+4x^2-48x-90x+69x+1080-4=0
We add all the numbers together, and all the variables
-69x+1076=0
We move all terms containing x to the left, all other terms to the right
-69x=-1076
x=-1076/-69
x=15+41/69
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