Question

А) ab-7c при a=8 b=-3 c=-1/7 б) ab+cb+c при

Answer 1

А)
$8 \times ( - 3) - 7 \times ( - \frac{1}{7} ) = - 24 + 1 = - 23$
Б)
$\frac{1}{7} \times 14 + 14 \times ( - 2) + ( - 2) = 2 + ( - 28) + ( - 2) = - 28$