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21/28 = 16/20
3/4 = 4/5
L <> R
| 184x=18x | | x-20+3x=180 | | 4(.5c+6)-2c=-9 | | x^3-9x^2+27x-115=0 | | 3-2x+4x+6=9 | | 2x+3=90 | | 1/6=9/48 | | H=-16t^2+20t+20 | | (1/4)x-1=32x+3 | | 1/2=8/16 | | 1/8=(w+4)/2 | | -54/9 | | (1/3)x+2=93x | | 44-3x=6x+24 | | 5/11=(m+6)/9 | | 22.54=.21x+17.5 | | 15+2x=5+3x | | 5+2.1667x=24.5 | | 6/(m+3)=4/11 | | 2(2)(2)+4(2)(4)=x | | 5+2.1667x=11.5 | | 12n-13=45 | | 6x^2+5X+9=10 | | 4x=28/29-5x | | y=-(x+1)(x-3) | | y=(x+2)(x-4) | | H=21+30t-5t^2 | | 2x-7=8-3d | | y=.21(20)+17.5 | | y=(x-2)(x+2) | | graphy=(x-2)(x+2) | | 315=21y |