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calculeaza 2a+3b-4c stiond ca a=73,b=77,c=23

Răspuns :

2a+3b-4c=2x73+3x77-4x23 <=>146+231-92=285
a=73⇒2a=2*73=146
b=77⇒3b=3*77=231
c=23⇒4c=4*23=92
 2a+3b-4c=146+231-92=285