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10*x+4.5*y-249;10*w-4.5*z-153;y+z-48;w+x-12
ln(x^4-x^2-1)
10*x+4.5*y-249;10*w-4.5*z-153;y+z-48;w+x-12
e^(x^-1)
(1-2*x)^2-(1*4*(9-x));(1/2)^2-((1/2)*(2*x-1))-x+9
| 2x+39=51 | | y+13+45=87 | | 5-(2x+3)=6-(-3-3x) | | 7h+10=25 | | 24/3/8= | | 12(2x-7)=4(6x+3) | | 4x-8=6z+12 | | X/9–1=-10 | | 4x+5+4x+1+x-6=180 | | x^2-10x+20=-1 | | 7s+12=-14 | | -sin^2(x)=2cos^2(x/2) | | 3x+7-5x-[4x-20-5]=4x-20 | | (6b+6)-(b+4)= | | 11-12=-5 | | 50p=10ps | | 9x^2+y^2-18=0 | | -(7x-1)+4x-2=1 | | J/2=17 | | (7x-1)+(-2x-11)= | | 50=10p | | z/12=-24 | | 10x+5(-3x+21)=65 | | 2x*7=15 | | 20p+40p= | | 4/6=10/x=14/y | | (3x-2y)+(-3x+8y)=12-6 | | 1/3k=-20 | | 2x+2x-20+x-8.5=180 | | (6y+7)-(2+5y)=11 | | (3x-2y)+(3x-8y)=12-6 | | 19c+2=20c+2-c |