Imagine you have a number line. Start at 0 and go to 12. You went to the right! Now you want to go from 12 another 9, but it's negative so you go to the left! You will end at 3. So 12+(-9)=3. It's the same as 12-(+9) or just 12-9.
Love J.
asked • 01/22/18what is the solution 12+(-9)
what is the answer 12+(-9)???
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