Answer:
12
Step-by-step explanation:
Rule: Change the sign of the subtrahend then procced to addition
Change the sign of the equation (from subtraction to addition) then change the sign of the subtrahend (from negative to positive)
9 - (-3) = ??
9 + 3 = 12
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Answers & Comments
Answer:
12
Step-by-step explanation:
Rule: Change the sign of the subtrahend then procced to addition
Change the sign of the equation (from subtraction to addition) then change the sign of the subtrahend (from negative to positive)
9 - (-3) = ??
9 + 3 = 12