Question

va rogg. e urgentt. am nevoiee, la exercitiul 2, va rogg​

Answer 1

Explicație pas cu pas:

a ≠ 0

$\overline {abc} \ \ \vdots \ \ 8 \implies (100a + 10b + c) \ \ \vdots \ \ 8$

$\iff (96a + 4a + 8b + 2b + c) \ \ \vdots \ \ 8$

$\iff \Big[8 \cdot (12a + b) + (4a + 2b + c)\Big] \ \ \vdots \ \ 8$

$8 \cdot (12a + b) \ \ \vdots \ \ 8 \implies \bf (4a + 2b + c) \ \ \vdots \ \ 8$

q.e.d.