Question

|7х-9|+5×|9-7х| при х=3​

Answer 1

$|7x-9|+5*|9-7x|, x=3;\\|21-9| +5*|9-21| = 12+5*12=72$

Answer 2

Ответ:

|7х–9|+5×|9-7х|=

=6×|7×3—9|=

=72

ОТВЕТ 72