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1/2 = 12/21
1/2 = 4/7
L <> R
| x^2+50x-30000=0 | | x+1/6=8/15 | | 8x-6=8x+4 | | x^2+50x-3000=0 | | x+13/30=5/6 | | -3x-4y=4 | | 7w-4y+2+8y+4w= | | -1/9x-8 | | 21/4-13/8 | | 4m-9n+7n-9n= | | 2*(2/x+10)+10 | | 4x-1=-8 | | 20/2*5-(3+7) | | 2(2/x+10)+10 | | 2/3+4/9 | | 4m-5n-9m-7n= | | 2(2/(x+10))+10 | | -2/3x10 | | 8x-5=-6 | | -108/9 | | y=-x+12x+7 | | 10/x=1/2x+1 | | y=-2x+16x-10 | | 7(v+1)-3v=2(2v+4)-13 | | 3(y-1)+3=-4(y-2) | | (3a^2+2a-2)-(3a^2-5a+2)=5a+2 | | 1/3b-4=13 | | (-4)(3)(-2)(-1)(-3)= | | 4q-3=-6 | | y=3x-6x+8 | | -18(y+1)=2(2y-9)-154 | | 7x-9y=-3 |