Relax

Respuesta :

4(2x5 + 3) - 4(2) + 2(5).

4(13) - 18.

52-18 = 34.
c = 5 // r = 2

4(2c + 3) - 4r + 2c = ?
8c + 12 - 4r + 2c = ?
6c + 12 - 4r = ?
6(5) + 12 - 4(2) = ?
30 + 12 - 8 = 37