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9/12 = 20/X
48/X = 50/25
48/X = 25/50
14/50 = 48/X
14/50 = Y/25
| 2x-4+8=0 | | 1z+8z+12=15 | | 5x+50=4x-4 | | 4+6x=4x | | 9/12=20/X | | 2(4*5-3)+6(3*7-5)= | | 48/X=50/25 | | 46=34-2(x-4) | | 48/X=25/50 | | (v+2)(v-5)=x | | 5+3(lnX)=8 | | 14/50=48/X | | 14/50=Y/25 | | 2(n-5)=n-1 | | 0.6x+x=24 | | 6(x-8)+10=2(x-7) | | 3.2x+.5(7.3-x)=4.7-6.4(x-2.1) | | 3y-5y=-6 | | (5/2)^2=124/X | | 38=11+12+c | | N/342=(3/7)^2 | | 7/3=342^2/X | | 4x*1=6x | | 7/3=342^2/X^2 | | 8/12=X/30 | | 10/N=1/14 | | 10/N=14/1 | | 1/2y-1/3-x-1=0 | | 15/31=X/26 | | 8h^2+12h-140= | | x+35=-7 | | 7/4=105/X |