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420/(-4) = 0
-105 = 0
L <> R
| (6z+12)(2z+9)=0 | | 4x^2-24x+6=0 | | (8-2x)2-9=13 | | x^2-11x+2=-16 | | 4w+18=50 | | 18x+92=281-12 | | -4x*-4X*x=4 | | 4-3m+2=-12 | | 21(v-34)=-1596 | | -3r+5=2 | | 4(3j+1)=28 | | (5p+76)= | | 4.8-1.8m=-6.54 | | 2x^2+x+4=500 | | -5(b-8)=125 | | y=7*30+30 | | 7(p+23)=189 | | x^2-8x+xy-8y=0 | | 5x+4=5(x-4) | | 3r(r+2)= | | y=730+30 | | -3w+2=10w+30 | | 12(g+18)=-444 | | -1/3x+6=10 | | -19v=133 | | 3-2(w+7)=-1 | | -8x^4+24x^3-88x^2=0 | | .4x+7.9=5.3 | | 8=4-2h | | -7x^3-14x^2-7x=0 | | -6=4R+6-2r | | -7-31=5x-7 |