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1;6;2;3;2;1
1;2;3;4;3;1
1;2;3;4;0;0
3;10;9;10;0;0
4;20;1;10;0;0
| 7(3x^2+7x+4)-2(5x^2+5x+3)=0 | | 20x^2+7=0 | | -27a+6b=-3a-2b | | X(x-2)=832 | | 3.2+0.5m=-2.3 | | x-13=-3x+7 | | g(-1/3)=-1/3-2(-1/3)2 | | 1.16(6p-24)+9=23 | | 5k-2=27 | | -4+2x=5-x | | 8x-42=38 | | 5(5u+4)=170 | | -10+2x=8-x | | 6x+3(5x+5)=183 | | 2(v^2+2v-524)=0 | | f(-1/2)=2(-1/2)-6 | | X+2x+3+3=3(x+6) | | y=-21x+9 | | 25y^2-300y+800=0 | | 8/14=9/r | | x+30=8 | | 3/4n-1/2=1/8;n=1/4 | | z^2-6z+2=0 | | z^2-6z+3=0 | | 4x-26=7x+30 | | x+2x-20=40 | | z^2-6z+4=0 | | -9y-11=5y+17 | | m/7=12/15 | | 20/x=3/7 | | 10-2y=2x | | 2+3(x-15)=5 |