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| 4c+14d+7u= | | 5c+2d+17u= | | 1-1/2*3 | | 5/6/7/6 | | 234/3*10-x=750 | | (x-2)2=8 | | 11*12/x-22=11 | | 5c+4d+7u= | | 23*x-107=698 | | 20*x+32=252 | | 7=v/17.5 | | 36*3/4-x=20 | | 18*6/2+x=99 | | 8c+2c+5d+3= | | x+555-33=705 | | x*12/2-22=44 | | 4/5*5/12 | | 15*5/x+24=49 | | x-48+140=156 | | 7x+3y=27 | | x*15/2=375 | | 144/12*x=48 | | 7+32-x+53=188 | | 8/13-5/13 | | 21*10+3+x=133 | | a^2-200a+4233.6=0 | | a^2-200a-4233.6=0 | | a*2-200a-4233.6=0 | | 9+1/6a=3 | | 7p+4q=-12 | | x=50+60-40/4 | | f(t)=-2*cos(2t) |