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20;3;2;15
11;4;1;8
23;15;1;3
(z^2)/6-((5*z)/2)-9 = 0
257;30;1;6
| -2(t+4.6666)=9.5 | | -6m^2-12=0 | | 3x+9x-2x+5=6x-4x+7 | | x+2x+1+3x-4=z | | 0x+5=1.5x | | .99x+2.97=2x+3 | | 5x+2=66 | | -4x+(-40)=44 | | -3f+3(-3f+5)=-81 | | 3y+4+9y+5= | | -2z+3=5 | | b^3-b^2+16b=0 | | 25x^2+55x+56=0 | | 3a-6b=114 | | 45xsquared-21x-12=0 | | x^2-3x-4=(x-4)(x+1) | | -4b-4(-6b-8)=72 | | 3N(N-12)=36 | | 3u-2=7 | | 90=10am | | 8x-10=2+5x | | z^2/6-5z/2-9 | | 84-6x=21x+15 | | 8x-0=2+5x | | .8x+1.2=x+1 | | 5x+5x+2x-7=63 | | (5a)4=29 | | 6n-27=-45+4n | | 2.3(-4.3(3))=x | | x^2+x+10=17 | | 7t-t-4=5t-3 | | -6=-3-3 |