Răspuns :
x=nr vaze
3x+14=7(x-2)
3x+14=7x-14
4x=28
x=7 vaze
3*7+14=21+14=35 flori
3x+14=7(x-2)
3x+14=7x-14
4x=28
x=7 vaze
3*7+14=21+14=35 flori
3n+14=7[n-2]
⇒3n+14=7n-14
⇒7n=3n+14+14
⇒7n=3n+28
⇒7n-3n=28⇒4n=28;
⇒n=7[vaze];
⇒3·7+14=21+14=35[flori];
⇒3n+14=7n-14
⇒7n=3n+14+14
⇒7n=3n+28
⇒7n-3n=28⇒4n=28;
⇒n=7[vaze];
⇒3·7+14=21+14=35[flori];