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∙ 6y ago12+8+10+12+11+9 = 62
17 + 13 + 12 + 12 + 6 + 9 = 69.
15 +26+9+12
12 plus 9 equals 21.
40 + 9 + 12 = 61
12 minus 63 plus 9 is -42
3 + 6 + 9 + 12 = 30
-5x + x + 9 = -4x + 12 -4x + 9 = -4x + 12 9 = 12 This equation has no solution.
It is the associative property for the addition of numbers.
12 + 16 + 18 + 20 + 9 = 75
9+12 = 21
12 + 12 + 12 + 12 + 12 + 12 + 12 + 12 + 12 = 108 The explanation is very simple. Since there is nine twelves you are technically repeating twelve nine times, and the operation for that equation would be multiplication. The equation would be- 12x9= 108