# Addition in ℤ/pℤ or in ℤ/pℤ[x]: +

### 5.34.2 Addition in ℤ/pℤ or in ℤ/pℤ[x]: +

The + operator adds two integers in ℤ/pℤ or two polynomials in ℤ/pℤ[x]. (See also Section 5.8.2.) For polynomial expressions, use the normal command to simplify.

#### Examples.

- For integers in ℤ/pℤ:
  Input:
  3%13+10%13
  Output:

  0%13

- For polynomials with coefficients in ℤ/pℤ:
  Input:
  normal((11*x+5 )% 13+(8*x+6)%13)
  or:
  normal((11% 13*x+5%13)+(8% 13*x+6%13))
  Output:

  ⎛ ⎝ | 6%13 | ⎞ ⎠ | x+ | ⎛ ⎝ | −2 | ⎞ ⎠ | %13