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Q: What is abc plus abc equals cdd if d equals 6?
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If abc plus abc equals cdd d equals 6 what does abc equal?

abc = 183.if abc + abc = cdd and d = 6, then:abc + abc + c66So, looking at the units:c + c = 6 possibly plus carry⇒ c = 3 (no carry) or c = 8 (carry)Looking at the tens:b + b + possible_carry_from_units = 6⇒ 2b + possible_carry = 62b is even, 6 is even, so the possible_carry must be even.The possible_carry is either 0 or 1; 1 is odd, so it must be 0, so c must be 3 (c = 3).This leave 2b = 6 possibly plus carry⇒ b = 3 (no carry) or b = 8 (carry)Looking at the hundreds:a + a + possible_carry_from_tens = c = 3 (as just found)⇒ 2a + possible_carry = 32b is even, 3 is odd, so the possible_carry must be odd.The possible_carry is either 0 or 1; 1 is odd, so it must be 1, so b must be 8 (b = 8).This leaves 2a + 1 = 3⇒ 2a = 2⇒ a = 1Making the number abc = 183.


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No.


Does -9 plus 6 equals 3?

No! It equals 15, but 9-6=3.


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6+1 equals 7. Plus 3 equals 10. Plus 4 equals 14.


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6.


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28


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14


What is 6 plus 6 plus 6 plus 6 equals?

4 x 6 = 24 lieng