Question

7а — За +2а — а = 16

Answer 1

(7a-3a)+(2a-a)=16

4a+a or 1a =16

5a=16

5a/5=16/5

a =16/5 or a=3.2

Explanation:

solving like terms or substract are same

you only have to find value of uknown value which was "a" question