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8/k-7 = 2/5
(4/3)*pi*x^3
(4/3)*2.1^3*pi
2.1*(4/3)*pi
((-9)^3)/2 = 0
| x=2(x+22) | | 13x-7y=60 | | 3[(18-3)+5(5+7)]= | | F(2a)=x^3-2x+1 | | (a^4b^2)^3/(ab^2)^2 | | 8/k-7=2/5 | | 12x-35=-5 | | -25=3+4w | | 6x^2-27x+50=0 | | 3(x-2)(x+1)-4=2(x^2-2(x)(1)+1) | | -6w+12=8w-32 | | 90+x+2x+60-x=180 | | 2/y-1)=4(y-3) | | 11.999960=4x^2+8x | | 11.294080=4x^2+8x | | 10.588200=4x^2+8x | | -7(3x-1)+12(2x-5)= | | 9.882320=4x^2+8x | | 9.176440=4x^2+8x | | 8.470560=4x^2+8x | | (-9)^3/2 | | 7.764680=4x^2+8x | | (-9)3/2 | | 5x*6x^2=78 | | 7xn=6 | | 2x+5y+10z=8950 | | x(3x-2)=408 | | 158=42-x | | 7.058800=4x^2+8x | | 6-8=7n | | 4g=g+g+g+g | | 2x+5y+10z=895 |