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5/65 = 15/x
24/3 = 120/t
(2/3)*q < -18
n/0.28 = 1/0.7
5/20 = p/15
| 400y=4x+8 | | -3x-3(8x+22)=15 | | 127(2x+41)= | | logx(1/8)=(-1/2) | | 25x^2-4=12 | | 5x-23=4x+7 | | 2+y=3-2[1-2(y+1)] | | 5+24=-17 | | -1=3+3x | | 5/65=15/x | | 3y-1x=9 | | 5x+6=7y | | 2x^2+24x-160=0 | | 1+3m-5m=-9 | | 3r^2+21=0 | | 24/3=120/t | | 64x^2+36y^2-192x-180y-207=0 | | 4t^2-13t+10=0 | | 2/3q-18 | | 4x-1=12x-27 | | 15+1.25x=10+2.5x | | n/0.28=1/0.7 | | 4x+11+7x+4=180 | | 5n^2+12n=-3 | | H=-4.9x^2+4.9x | | 5/20=p/15 | | 1/a-1/2=1/a-1 | | -4[3m+5]=-2[m-2] | | 7/10=n/18 | | (x+4)(x+6)=-3 | | 13/2=65/n | | 9u^2+9u-4=0 |