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21000;7
20;100
2.52;6
1240;4.5
200;100
| 3x+5-x=2x | | 5x-(5-x)=6x | | 3/x-1=3 | | 512^-4/3 | | 224-x=-16 | | 6x=7x^2+9x-54 | | 5(x-3)-3x+7=9 | | 4/3x3.14x1.75^3 | | 5x+1+2(x+3)=4(2x+5) | | x^3+x^2-2x+72=0 | | 5x-(2x+3)=2x-(x+1) | | 20.2(x+5)-5x=1 | | -5u=15/2 | | 7x+x-5x=21-12 | | 24=-6/7u | | Y+14=-10 | | 0=4x+16 | | 11x-5x+6x=-35+11 | | 60+40+x+20=180 | | X-8+2=-13 | | 3y+-14=4 | | 100=4/5x-20 | | 65+9x=83+6x | | 100=4/5x-200 | | 5(x+1)+10=-(x-1)+5x | | cos(0.5t+2)=0 | | ctgx=0.5 | | X-7+9=23 | | tanx/3=3/2 | | X-9+2=15 | | 15(x-2)+2(5x-8)-3(11x+1)+73=0 | | 21x3/2 |