12а-3в, если а=3/4,В=5/6

Question

12а-3в, если а=3/4,В=5/6

Answer 1

12 * 3/4 - 3 * 5/6 = 6 - 10 = -4

Answer 2

12×3/4-3×5/6=12/1×3/4 - 3/1×5/6= 9-2.5= 6.5
Ответ: 6.5