Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 John has to restring 3 basses with 4 strings each, twice as many guitars which have 6 strings each, and 3 fewer 8 string guitars than the normal guitars. How many strings does he need?


### Response:
 Les basses nécessitent 3*4=<<3*4=12>>12 cordes
Il restring 2*3=<<2*3=6>>6 guitares normales
Cela nécessite 6*6=<<6*6=36>>36 cordes
Il restring 6-3=<<6-3=3>>3 guitares avec 8 cordes
Donc cela utilise 3*8=<<3*8=24>>24 cordes
Donc il utilise 12+36+24=<<12+36+24=72>>72 cordes