Algebra: Chapter 2, Lesson 4, page 71.
Subtraction of Rational Numbers
Today, we are working on subtraction of rational numbers. Remember, just do the inverse of subtraction and ADD the inverse (or opposite) of the number to the other number.
Examples:
`2-6 = 2 + (-6) = -4`
`-5 – 7` is really `-5 + (-7)`, remembering that the + sign is invisible. So this becomes just `-5 + (-7)` and remembering the adding rule of 2 negatives, the answer becomes `-12`.
`-4 – (-5)` is really `-4 + 5` because 2 negative are a positive (bling-bling or make change-change from Ms. Phillips and Ms. Craig) and the answer is `+5 – 4` and the final answer is `+1`!
Two of tonight’s homework problems solved by MrE are here! Just click it!
Hotmath.com has these tutorials for the addition and subtraction of rational numbers too!
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Algebra 1a: Chapter 1, Lesson 8, page 38.
Reasoning Strategies
See Day 10 – September 8 for Algebra