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-3(x+1)(2x-1)+2(3x+1)=3x(2-2x)-1
We move all terms to the left:
-3(x+1)(2x-1)+2(3x+1)-(3x(2-2x)-1)=0
We add all the numbers together, and all the variables
-3(x+1)(2x-1)+2(3x+1)-(3x(-2x+2)-1)=0
We multiply parentheses
-3(x+1)(2x-1)+6x-(3x(-2x+2)-1)+2=0
We multiply parentheses ..
-3(+2x^2-1x+2x-1)+6x-(3x(-2x+2)-1)+2=0
We calculate terms in parentheses: -(3x(-2x+2)-1), so:We multiply parentheses
3x(-2x+2)-1
We multiply parentheses
-6x^2+6x-1
Back to the equation:
-(-6x^2+6x-1)
-6x^2-(-6x^2+6x-1)+3x-6x+6x+3+2=0
We get rid of parentheses
-6x^2+6x^2-6x+3x-6x+6x+1+3+2=0
We add all the numbers together, and all the variables
-3x+6=0
We move all terms containing x to the left, all other terms to the right
-3x=-6
x=-6/-3
x=+2
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