To get the sum of a negative and a positive number use the sign of the larger number and subtract. Solve Negative numbers problems with our Negative numbers calculator and problem solver. Dont forget that if you multiply or divide by a negative number you MUST flip the sign of the inequality.
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Now theres several ways to think about it. Understand subtraction as adding the opposite. To get the sum of a negative and a positive number use the sign of the larger number and subtract. Subtracting a negative number is the same as adding a positive number that is go up on the number line.