Question

5а-4b, егер а=-0,8;b=1,25
9​

Answer 1

Ответ:

$5a - 4b \\ 5 \times ( - 0.8) - 4 \times 1.25 = - 4 - 5 = - 9$

Answer 2

5а-4b=5×(-0,8)-4×1,25=-4-5=-9