help

Hint: Find the LCM of 13, 17, and 19

Maybe find HCF of these values then find LCM.

from.

online discount codes

online promo codes

Let's find the LCM of them all

\(13(13,26,39,52,65,78,91,104,117,130,143,156,169,182,195,208,221,234,247,260,273,286,299,312,325,338,351,364,377,390,403,416,429,442,455,468,481,494,507,520,533,546,559,572,585,598,611,624,637)\)

\(17(17,34,51,68,85,102,119,136,153,170,187,204,221,238,255,272,289,306,323,340,357,374,391,408,425,442,459,476,493,510,527,544,561,578,595,612,629,646,663,680,697,714,731,748,765,782,799,816,833) \)

\(19(19,38,57,76,95,114,133,152,171,190,209,228,247,266,285,304,323,342,361,380,399,418,437,456,475,494,513,532,551,570,589,608,627,646,665,684,703,722,741,760,779,798,817,836,855,874,893,912,931)\)

There is no LCM for them at least what one can write in an exam......... 

Note that 13, 17 and 19 are all primes.

Let x = 17*19, y = 13*19, z = 13*17

Then x + y + z = 791