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-4/7-(2/7) = 0
-(2/7)-4/7 = 0
-4/7-2/7 = 0
-(2/7+4/7) = 0
-6/7 = 0
L <> R
| -(4/7)-(2/7) | | X(20/21) | | X(20*21)= | | X(20)(21)= | | 4(3-2x)=5-8x | | 45!/(45-0)!0! | | 6(x-8)+32=2(x-6) | | 0=1/x-2 | | 37f= | | 7x/14=1-3/7x | | 16^(7/4) | | 7x(-1.5)= | | 16(x-7)= | | 16(x-7)(2x+3)= | | 8x+12(-6x)= | | 48x+12= | | 0=6n^2+24n-840 | | [3x-2]=31 | | 3z+z^2-8=0 | | 8z-6=-2(-4z+3) | | (x-.4)/x=1.29 | | 18+6u= | | =6+(-6)-(5)+7 | | 75/10-43/5 | | 20=64x+12 | | 18=94x+7 | | -2(x-2)=5x+31 | | b+bi=15+7i | | 5x+6x-3x-5=35 | | 18=64x+12 | | -5/6-(-3/4) | | 1/3×11 |