Hitungkan. A. 2a+3a : Sederhanakan. A.2a+3b+4a+7b : B. 5ab-3a-2ab-5a :

A)
2a+3a = 5a

A)
2a+3b+4a+7b
= 2a+4a+3b+7b
= 6a+10b

B)
5ab-3a-2ab-5a
= 5ab-2ab-3a-5a
= 3ab-8a