\[\boxed{\mathbf{40\ (40)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
Пояснение.
Решение.
\[Число\] | \[24\] | \[53\] | \[60\] | \[78\] | \[79\] | \[96\] | \[142\] | \[241\] | \[495\] | \[7207\] |
---|---|---|---|---|---|---|---|---|---|---|
\[Четное\ число\] | \[+\] | \[-\] | \[+\] | \[+\] | \[-\] | \[+\] | \[+\] | \[-\] | \[-\] | \[-\] |
\[\boxed{\mathbf{40}.}\]
\[1)\ 32b - 14b = 18b\]
\[2)\ 27a + a - 18a =\]
\[= 28a - 18a = 10a\]
\[3)\ 21c - 7c - 8 = 14c - 8\]