10
ДОМАШНЕЕ ЗАДАНИЕ
Упрости выражения.
Найди значения при а = 3, b = 2, x = 4.
(a + b) - 5 + 9а + 3b
13 - (a + b) - 7b+4a
6 - (x + a) - 5a
30x − (5x + 4x)
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