Question

Упростите выражение: 7,4а+2,6b-(2,5а-3,7b)

Answer 1

7.4a+2.6b-2.5a+3.7b=4.9a+6.3b

Answer 2

4,9а+6,3b

Answer 3

7,4а+2,6b-2.5a+3.7b=
4.9a+6.3b