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6/9 = 4/x
t/5-2 = 15
7/12 = r/30
n/5 = 2.8/7
6.54;620
| 6/9=4/x | | t/5-2=15 | | 5+2x=7+3x | | (2k-7)(k+4)=0 | | x+2x+x-3x=11 | | 7/12=r/30 | | (3x-7)(8x-5)=0 | | 3+3x=5+8 | | n/5=2.8/7 | | F(-4)=3(-4)-6 | | 3(3+4x)-3= | | 5x^2+3x=o | | 13=6p+1 | | m^2-3=52 | | 8x+2(78)=128 | | 3(6x-2)+6= | | 6-2x=4n+6 | | 1-7f=10+3f | | (3*4)+(1-2)=11 | | 1-7f=10+38 | | (3k-1)(k-5)=0 | | 3/t=9/5 | | 4*a+7=10+a | | Tan(31)=12/x | | 3/t9/5 | | 16q-8q-7q-q+2q=10 | | 3(4s+1)=123 | | n=9/16 | | (5r+7)(6r+5)=0 | | 19x=1000 | | 3(2l+10)=36 | | 1/4(y)=-7 |