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-30x^2(1+20x(1+1=0
| 1/5(15x+10)=6x-4 | | ∠B=14x+38 | | 3(2x+4)=5x-12 | | x-(2.7)=34.7 | | Y=5x-2=5 | | 4(n+2)=-2(2n-1) | | h+7=8 | | y/9/6=6 | | 5/2-2x=3/4 | | 365+-18x=185 | | -7=-7(r-2) | | 5(4x-5x)+3x-1=20 | | x+2x-60=180 | | (x-2)²=x²-2 | | 5(4x-5x)=3x-1=20 | | 4=2-3/4x | | 5(4x-5x0=3x-1=20 | | -4=-z+12/4 | | -3=2/3x+1 | | _3=2/3x+1 | | 5b-10=-65 | | 3.2/1.09=x/50.25 | | 7n4=25 | | 2x-4+5x-5=-51 | | -2(-3x-2)-5x=3=-2 | | -11(x+4)+12=-18 | | -1=x+9/6 | | 3=a+9/5 | | 11=15+w/3 | | -12=2(2+w) | | 2=b-7/3 | | 3=s-12/6 |