## Congruence Calculations

The { CON } selection from the NUMBER THEORY menu lets you perform congruence calculations. Given a, b, and m, the program searches for all values of x such that ax is congruent to b for modulus m.

### Performing Congruence Calculations

To perform a congruence calculation:- Select
**{ NUM }**from the**MATHEMATICS**menu.

The calculator displays the**NUMBER THEORY**menu. - Select
**{ CON }**from the menu.

The calculator displays:

- Enter the values of a, b, and m, pressing the applicable key after each value.
- Press
**{ EOD }**to continue with the program and perform the calculation.

• If there is no solution, the message**NO SOLUTION**is displayed.

• If there are solutions, the value of x for the first solution is displayed.

for example. - Press
**{ NXT }**repeatedly to display the remaining solutions for which x ≼ m.

When all the solutions have been displayed, pressing**{ NXT }**returns you to the**CONGRUENCE**menu.

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