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(2*x)/(x^2)-81 = 0
28;2
(7/5)*x = -21
x/5-1 = 5/4-(x/4)
108;2
| 8x-4=7x+9 | | 2x/x^2-81 | | 2=6y-x | | -x/3=24=26 | | 7/5x=-21 | | x/5-1=5/4-x/4 | | 360=(6x+20)+y+2(4x) | | 1.8(-0.2x-1.8)+5.5x=27.6 | | d/7=1.5 | | 26=-x/3=24 | | 5-x^2=1/4*x^2 | | 3(6x+1)=2(16x-2) | | -5=-10x+y | | 11=x/9-21 | | x/5.00-200.0/5.00=575.00 | | 2x+9=15 | | x/8-28=18 | | x+20=7x+2 | | -24+21y=-3x | | 78=5x-6+6x-15 | | 2.2x-3.1(4.5-0.5x)=-0.2 | | z+20=7x+2 | | 8w-7=5 | | -2y-30+10x=0 | | -(1-5x)=-8x+25 | | x=45000+.33x | | 260/52=5 | | y=a(x-0)(x-150) | | 3x+92=5x+56 | | -4.9x=16/27 | | 260/2*26=5 | | (1500-x)-1200=y |