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(x+21)*(x-7) = 0
5;3;3;5;0;0
8;7;35;24;0;0
1;4;1;4;46;81
2;6;-9;19;0;0
| 3(x-6)-x=-3+5(2x+1) | | 5*155= | | 2.75x-3.25=13.25 | | W-1.23=4.56 | | W-1.23=4.6 | | 7-(7x-7)+7=0 | | 3(2x-4)+5x=-4(5x-2)+7 | | 7+7-(7x-7)=0 | | 2c+5=c+15 | | Ln(x+6)+lnx=55 | | 18y-(6y+22)=86 | | x-(0.33x+0.05x)=10910 | | -2(16-4x)-8=6(x+2) | | 56x-8=104 | | (2x+4)+(3x-13)=116 | | k=(st/x) | | k=st/x | | 40x+12(1.5)=725 | | 9x^2-35x-7=0 | | 40x+4(1.5x)=621 | | (3z-4y)(9z+16y)= | | 2y+4y=42 | | 27+-7= | | 3(4x-2)-14=2(6-2x) | | 15a+15b= | | 0.6v=2.5 | | 12x-24=-3(8-4x) | | 4x+6x+15=165 | | 5(m-5)squared= | | -6-a=-(6+a) | | x^2+2x=4x+4+31 | | 2x-4(0)=0 |