Question

6 ( 2x - 3)+2(5-2x) якщо х= 2.5

Answer 1

Ответ:

6 ( 2x - 3)+2(5-2x) =12x-18+10-4x=8x-8

x=2.5

8•2.5-8=2-8=-6

Answer 2

6 (2x - 3) + 2 (5 - 2x) = 12x - 18 + 10 - 4x = 8x - 8 ; если x = 2,5, то 8x - 8 = 8 * 2,5 - 8 = 20 - 8 = 12.