Question

- 2,5(8a+7b)+4,3(a-2b)

Answer 1

-20а - 17,5b + 4,3a - 8,6b = - 15,7a - 26.1b
1) -20a + 4,3a = - 15,7 a
2) -17,5b - 8,6 b = - 26,1 b

Answer 2

To simplify the expression 2.5(8a+7b) + 4.3(a-2b), we can use the distributive property and combine like terms:

2.5(8a+7b) + 4.3(a-2b)

= 20a + 17.5b + 4.3a - 8.6b (distributing 2.5 and 4.3)

= (20a + 4.3a) + (17.5b - 8.6b) (grouping like terms)

= 24.3a + 8.9b (combining like terms)

Therefore, the simplified expression is 24.3a + 8.9b.