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(-1/2)*b = 21
13;12;6;21;4;2
2;5;2;5;9;8
16.15;25
(3*x)/9 = 4*x
| (-1/2)b=21 | | -125=(-300)-(-220) | | a(4+1)+b(4-2)=16 | | 3x/9=4x | | 6x-5=9x+1 | | -log(x)=4.55 | | 3z-4y-1/3 | | (x/2)*x=135 | | 3z-4-1/3 | | 4.55=-log(x) | | log1/2(x)=0 | | 2x^2-4x=320 | | 4x+20=23 | | 779=82x | | (5v^5+9v^2-4)-(9v^5-7v^2+11)= | | X+2X-3X+4X=7 | | 4x-3(2-3x)=3(x-4)-24 | | -2=1/6x | | 4x+(7y-4x-x+3y)-x+y= | | 6q^2-2q=5q^2-6q+21 | | log[5](2x-1)+log[5](x+2)=2 | | X(3x+4)=243 | | x*4+163=x*10-5 | | 3.8+b=33 | | A=(5x-3)(2x+4) | | x-2.8=11.4 | | -t/5=(ln(1/1800))/(ln(2)) | | x+3.8x=-6.6 | | 5x-6/12-10x | | 4x+8=9x+33 | | 5x-(18+9x)=42 | | 96x^2-4x-1=0 |