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4*x+2*y+22;4*x+y+21
ln((2*tan(x)+2)/(2-(2*tan(x))))
4*x+2*y+22;4*x+y+21
(1/7)*x-(5/7) = 2;x
x
4*x+y-5;2*x-y+2
| -3/4q=15 | | -17+1.7z=5.1 | | f=5w+15 | | COS(X)=COS(20) | | 17+1.7z=5.1 | | T+18.1=2.9x | | 5y=-5y-5 | | 14x+20y=3748 | | -9=1.8x-5.4 | | T+18.1=2.1x | | Y=-7/4x-9/4 | | 3x+20=2x+45 | | 9n^2-81=0 | | T+18.9=2.1x | | 2y+9=-21 | | -z^2+8z=0 | | 1.5=0.25(c+5) | | 7p=98 | | -82-8x=7x+173 | | 6x+5=9x-46 | | 38-2a+54= | | f(18)=f(18-6)+1 | | y=160t+-16t^2 | | 67+-7d=0 | | sec^2x-3secx=1 | | (D+4)(d-7)=0 | | 8y=2.4 | | 2/5*4-1=9 | | -5-65=6x+122 | | 2cos(x-20)=0.5 | | 2k-7=-8k+13 | | 3.2k-7=-8k+13 |