Question

упростить выражения

2,8ab²:(0,7b)+1,3ab

8 1/3n³m³:(1 3/5n²m²)-1,9n

Answer 1

2)

Объяснение:

8х+24+4х-8-6х-2=14-10х

Answer 2

Объяснение:

2,8ab²:(0,7b)+1,3ab = $\frac{14}{5} ab^{2} :(\frac{7}{10} b)+1,3ab =\frac{14}{5} ab^{2} : \frac{7b}{10} +1,3ab=\frac{14}{5} ab^{2} *\frac{10}{7b} +1?3ab=2ab*2+1,3ab=4ab+1,3ab=5,3ab$

8 1/3n³m³:(1 3/5n²m²)-1,9n = 25/3n³m³ : (8/5n²m²)-19/10n = 25/3n³m³ : (8n²m²/5)-19/10n = 25/3n³m³ : (5/8n²m²)-19/10n = 1/30n*(625/4m-57) = 1/30n * 1/4 *(624m - 228) = 1|200n(625m - 228)