| \( 12 + 9 \) | ... | \( 30 - 9 \) | \( 45 - 7 \) | ... | \( 30 + 8 \) |
| \( 85 - 6 \) | ... | \( 64 + 7 \) | \( 38 + 5 \) | ... | \( 50 - 8 \) |
Решение:
\( 12 + 9 = 21 \)
\( 30 - 9 = 21 \)
\( 21 = 21 \)
\( 85 - 6 = 79 \)
\( 64 + 7 = 71 \)
\( 79 > 71 \)
\( 45 - 7 = 38 \)
\( 30 + 8 = 38 \)
\( 38 = 38 \)
\( 38 + 5 = 43 \)
\( 50 - 8 = 42 \)
\( 43 > 42 \)
Ответ:
| \( 12 + 9 \) | = | \( 30 - 9 \) | \( 45 - 7 \) | = | \( 30 + 8 \) |
| \( 85 - 6 \) | > | \( 64 + 7 \) | \( 38 + 5 \) | > | \( 50 - 8 \) |