55+67
$\sqrt{\Box}$ 135.12/10
54000=x•441/400
(x+3)(x-5)-(2x+3)(2x-5)
3x-2>4x+3
(x^6/16)^-1/2
2x-8<7x+12
400000000=1.5*x/2.5
129000000=1.5*x/0.583
125⅔
