Question

УМОЛЯЮ!!!!45 Б!!!!!!!!!!
Спростити вираз:
1)-16m∙1,5n;
2) 2,6а - 5,4b – а + 2b
; 3) -(7,4-k)+(5,2+k);
4) 7а - 6·(19-а).

Answer 1

1) -16m × 1,5n = -24mn

2) 2,6a - 5,4b - a + 2b = 1,6a - 3,4b

3) -(7,4-k) + (5,2+k) = k - 7,4 + k + 5,2 = 2k -2,4k

4) 7a - 6(19-a) = 7a + 6a - 114 = 13a - 114

Answer 2

Пошаговое объяснение:

-16m * 1,5n = (-16 * 1,5) * m * n = -24mn

2,6a - 5,4b - a + 2b = 1,6a - 3,4b

-(7,4 - k) + (5,2 + k) = -7,4 + k + 5,2 + k = -2,2 + 2k

7a - 6(19 - a) = 7a - 114 + 6a = 13a - 114