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25/n = 40/25
1280-((80*d)/21) = c
(5/3)*x = 2/9
(-1/2)*r-12 = -27
231.04*(22/7) = 0
| ln(9750-1750x)=ln(10000-2000x) | | 3y-2+y=10 | | 25/n=40/25 | | 40x+20y=2000 | | 66-2x=81-3x | | 1280-80d/21=c | | -3-1/2x= | | 2x-5-3x=35 | | 2(b+2)-(9+b)=-3 | | 2÷1/6 | | 2x^4+5x^2+4=0 | | 3(3-4r)=9+4r | | 5/3x=2/9 | | 2n(n^2-5/2n) | | 4-2a=15 | | -1/2r-12=-27 | | 2x+3+5x-8=72 | | 7b^2+35=5-41b | | -8+4b=8(-6+3b) | | 4(1+5p)=40+2p | | 36ft=yd | | 9-(-2m)=14 | | 24/n=30/00 | | 11.7-2x=2 | | 3(-x+9)= | | -2x-(9-10x)= | | (22/7)(231.04) | | 3(5x)=0 | | k/53/20 | | 12x-8-12= | | 3/8•3/4= | | -6-3=12 |