gummybear0
08.01.2021 •
Mathematics
−7×7+9× −1/−1 = ?
evaluate?
Solved
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Ответ:
-40
Step-by-step explanation:
-7 x 7 + 9 x (-1) / (-1)
-49 + 9 x (-1) / (-1)
-49 - 9 / (-1)
-49 + 9
= -40
Ответ:
the question is tricky. hexagonal pyramid has eight regions but only six are congruent.