hely7856
28.10.2020 •
Mathematics
(-21) + (-9) =
A 30
B 33
C -30
Solved
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Ответ:
-30
Step-by-step explanation:
Note the rules of signs. If one negative sign is directly next to a positive sign, it becomes a negative.
Subtract:
(-21) + (-9) = -21 - 9 = -30
C) -30 is your answer.
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Ответ:
need brainliest
Step-by-step explanation: