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(3x-5)(10-0.6x-2)+(x-5)(20-x)=259.000
We move all terms to the left:
(3x-5)(10-0.6x-2)+(x-5)(20-x)-(259.000)=0
We add all the numbers together, and all the variables
(3x-5)(-0.6x+8)+(x-5)(-1x+20)-259=0
We multiply parentheses ..
(+0x^2+24x+0x-40)+(x-5)(-1x+20)-259=0
We get rid of parentheses
0x^2+24x+0x+(x-5)(-1x+20)-40-259=0
We multiply parentheses ..
0x^2+(-1x^2+20x+5x-100)+24x+0x-40-259=0
We add all the numbers together, and all the variables
x^2+(-1x^2+20x+5x-100)+25x-299=0
We get rid of parentheses
x^2-1x^2+20x+5x+25x-100-299=0
We add all the numbers together, and all the variables
50x-399=0
We move all terms containing x to the left, all other terms to the right
50x=399
x=399/50
x=7+49/50
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