Subjects algebra

Integer Addition Subtraction 083C13

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1. The problem is about adding and subtracting integers in word problems. 2. When adding integers, if both numbers have the same sign, add their absolute values and keep the sign. 3. If the integers have different signs, subtract the smaller absolute value from the larger absolute value and take the sign of the number with the larger absolute value. 4. For subtraction, change the subtraction to addition by adding the opposite of the second number. 5. Example: Add -3 and 7. 6. Since the signs are different, subtract 3 from 7 to get 4. 7. The sign is positive because 7 is positive. 8. So, -3 + 7 = 4. 9. Example: Subtract 5 from -2. 10. Change subtraction to addition: -2 - 5 = -2 + (-5). 11. Both numbers are negative, so add their absolute values: 2 + 5 = 7. 12. Keep the negative sign: -7. 13. So, -2 - 5 = -7. 14. Always read the word problem carefully to identify whether to add or subtract and apply these rules.