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2*n-(5*n) = 2/12
2*x-(5*y)+19;3*y-5*x-19
(5/9)*(z-9) = 0
sin(6*x^3-(2*x))
2*x-(13*y)+4;x+3*y-6
| Q-67=885 | | 3(25)+8x=219 | | (8-3a^2)(2a^2+6)=0 | | Q-86=760 | | 200-1.5x=150-0.5 | | -45h^3+120h^2-80h=0 | | 4(x+5)+2=4x+2 | | -5x+15y=-20 | | (3+2m)+(8+4c)= | | 4a+6u=50 | | Y=100(1.04)12 | | 81x^4•16y^4/2y^2-2 | | 8x+5y+5z=1 | | 5a+2u=35 | | 1+-9p= | | 15x-3=-15x+-3 | | =-1+x^2 | | 1x+1x+1x+1x=8 | | f(x)=-1+x^2 | | 9p+m-1= | | 26x-5=28x | | .5(6x+7)+.5= | | 6c+2z=18 | | x=3(2y-x) | | 6r+15-21= | | 4c+3z=22 | | 1-8r-8r=-15 | | X^5-9x^3+14x=0 | | F(x)=(x-6)(x-6)-2x-7 | | 3A+A=8 | | Y=50(1+0.25)t | | 2x^2+15x-9.5=0 |