Subtracting Signed Numbers
Rule for Subtracting:
You can subtract a number by adding its opposite.
When subtracting two numbers, change the sign of the number being subtracted and then follow the rules for adding signed numbers.
(Subtracting a number is adding its opposite.)
Examples:
- 7 – (-3) = 7 + (+3) = 10
- -10 – (-7) = -10 + (+7) = -3
- -8 – (+6) = -8 + (-6) = -14
- 13 – 4 = 13 + (-4) = 9
