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9x27+2x31-28
9 x 27 + 2 x 31 - 28..... Multiplication sums are first so... 9 x 27 = 243 & 2 x 31 = 62.This gives the new sum of 243 + 62 - 28. Addition is next... 243 + 62 = 305.Finally... 305 - 28 = 277
1.1481
27 x 1 = 27 27 x 2 = 54 27 x 3 = 81 27 x 4 = 108 27 x 5 = 135 27 x 6 = 162 27 x 7 = 189 27 x 8 = 216 27 x 9 = 243 27 x 10 = 270 27 x 11 = 297 27 x 12 = 324 27 x 13 = 351 27 x 14 = 378 27 x 15 = 405 27 x 16 = 432 27 x 17 = 459 27 x 18 = 486 27 x 19 = 513 27 x 20 = 540 27 x 21 = 567 27 x 22 = 594 27 x 23 = 621 27 x 24 = 648 27 x 25 = 675 27 x 26 = 702 27 x 27 = 729 27 x 28 = 756 27 x 29 = 783 27 x 30 = 810 ...
Express the numbers in prime factorisation in power form: 12 = 22 x 31 27 = 33 For gcf multiply together the lowest power of the common primes: gcf of 12 and 27 = 31 = 3 For LCM multiply together the highest power of all the primes (across the numbers): LCM of 12 and 27 = 22 x 33 = 108