Question

3,3а+(а-4)=
5а-(0,7а+8)=
5,3b-(2b+3)=
9,6b+(7-0,4b)=

Answer 1

3,3а+(а-4) = 3.3a+a-4 = 4.3a-4
5а-(0,7а+8) = 5a-0.7a-8 = 4.3a-8
5,3b-(2b+3) = 5.3b-2b-3 = 3.3b-3
9,6b+(7-0,4b) = 9.6b+7-0.4b = 9.2b+7