Bob both spends and earns money. We write an expression for this situation, involving several additions and subtractions. Then I convert the subtractions into additions. Lastly we find the value of this integer sum.
Subtraction of integers — a video lesson
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Back to the integer videos index
Math Mammoth Grade 7 complete curriculum
Math Mammoth Integers — a self-teaching worktext with explanations & exercises for all operations with integers