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ln((2-x)/(x+1))
ln(x^-2)
x+3*y-6;y-2*x+5
1;6;5;6;5;5
10*ln(x)-x
| -15=n-15 | | 5_1/2×=12 | | x^2+3*x^3=0 | | 21y-12x= | | -3=2x-2 | | 21=6t+5-7r | | 8=2x+12 | | 5x^4-28x^2+15=0 | | 12+92+c=108 | | 9(3w-5)=9 | | -2x-7=-3x-10 | | 50h=60(h-1) | | 3(x-2)=(1-2x).3-3(2-2x) | | 11m-2=9m+19 | | 6x-100=3x-10 | | 15x+7=180 | | 2*2(x+1)=3*3(2x-1) | | 2(2-x)=8 | | H+386=221 | | 4x-25=2 | | (X-2)-(X-2)=3+X | | x-2(15x)=12 | | 7x/x-5=2x+10/x-5 | | x+1.2x=60 | | T(n)=4n+6 | | (1/2)In(x-3)-Inx=0 | | (1/2)In(x-3)-Inx | | 1/8÷7/9 | | 4(11a-6)-9(4-2a)= | | 2b-.1=3b | | 7(5c+9)+3(12+11c)= | | 20=6x-3 |