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7;12
747;83
12;4
35/280 = 0
2;8;7;8;16;0
| 8r^2-6rs+12rs-9s^2= | | 35/280 | | 3x^2-ax-12=0 | | 9+5a=-a+9 | | 9+5y+3z=0 | | 4y+11=2y+6 | | p=220+25n | | 9y+1=8y-6 | | 12r^2-9rs+20rs-15s^2= | | 66x+22y=12 | | 8y+2=14+3y | | 3+3x+5x=-93 | | 6v^2+4v+11=0 | | 4125=n^2+20n+1200 | | 4125=n*2+20n+1200 | | 7y+3=17+3y | | 8y+5=13+4y | | 8r^2+10rs-25s^2= | | 18w-90=24w+48 | | 3.5x+2.25= | | (6r-7)/-10=r/4 | | x(x+7)=56 | | x-8+x=-6 | | 11x-(3x-6)=78 | | -27=-6x-5x+6 | | -27=-6x-5x | | 5r^2-8r-40r+64= | | 6.5x=34 | | 2[8/2(2)^2-13] | | h(t)=-16t^2+27t+100 | | (Lnx/x)*2x | | 21s^2-27s+28s-36= |