(3ab+5a-b)-(12ab-3a)=

Question

(3ab+5a-b)-(12ab-3a)=

Answer 1

3ab+5a-b-12ab+3a=-9ab+8a-b=8a-9ab-b

Answer 2

 

(3ab+5ab)-(12ab-3a)=3ab+5ab+3a=-4ab+3a .......................................

                  Ой извините я там минус не заметила

 

(3ab+5a-b)-(12ab-3a)=3аb+5а-b-12аb+3а= 8a-9ab-b