in the equation solver mode, the algebra fx series is able to solve simultaneous linear equations, polynomials, and arbitrary equations. the calculators can solve simultaneous linear equations up to 30 unknown variables and polynomials of degrees up to 30. this was a huge improvement from its predecessor cfx-9970g, where only six variables are accepted for simultaneous linear equations and three is the maximum degree the polynomials can take. casio also introduced a new solve module of arbitrary input equations for the first time. given an initial starting value and range, the module will calculate one nearby root and return to the users.