The answer is 54. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
13...... 9 plus 5 equals 14...... 14 minus 1 equals 13
-14
6+8=14
6 + 13 + 2 + 12 + 7 + 14 = 54
-14
37
46
3c - 12 = 14 + 5cSubtract 3c from each side:-12 = 14 + 2cSubtract 14 from each side:-26 = 2cDivide each side by 2:-13 = c
12 x 13 = 156
13/13 + 12/14 = 13/7 or 16/7
-1 + 13 = 12
100 - 12 + 14 - 52 + 187 = -165