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The SUM is 31over63. When adding two fractions with uncommon denominators you give them a common denominator by multiplying the denominators. Then multiply the numerators by which their denominator was multiplied. This keeps the problem balanced. You would then have -18over63 plus 49over63. -18 plus 49 equals 31, giving you 31over63.
If you needed to divide negative 2 over 7 by 7 over 9, the answer would be -18/49 because you 'keep' the first fraction, 'change' the function to multiplication, and 'flip' the second fraction when dividing fractions.
What else can I help you with?
What is negative 1 over 15 plus negative 3 over 5?
The sum of -1/15 and -3/5 is -2/3
What negative 1 plus negative 2?
The sum of -1 and -2 is -3.
What is negative 1 plus negative 2 plus negative 4 plus negative 5?
The total sum is -12 or negative twelve.
What is the sum of negative 2 plus positive 2?
zero
What is negative 6 plus negative 2?
The sum is negative 8.
What is negative 1 over 15 plus negative 3 over 5?
The sum of -1/15 and -3/5 is -2/3
What is the sum of 2 plus negative 4?
-2
What negative 1 plus negative 2?
The sum of -1 and -2 is -3.
What is negative 10 plus negative 2?
The sum of -10 and -2 is -12.
What is negative 1 plus negative 2 plus negative 4 plus negative 5?
The total sum is -12 or negative twelve.
What is the sum of negative 2 plus positive 2?
zero
What is negative 6 plus negative 2?
The sum is negative 8.
What is 12 plus negative 12?
The sum of 14 and -12 is 2.
What is 14 plus negative 12?
The sum of 14 and -12 is 2.
What is negative 3 plus 1 plus negative 5?
The answer is -7. minus three plus one is minus two, adding a negative is the same as subtraction and so plus negative five means minus 5 so the sum is -2-5=-7 The Sum= -3+1-5 -2-5 -7
What is positive 9 plus negative 11?
The sum of +9 and -11 is -2.
What is a positive 9 plus negative 11?
The sum of 9 and -11 is -2.
