Question

10. Add the following expressions by regrouping the like terms:
a) 15xy-2y+3z-2xy+yz-9z
b) Sab+12b²a-2ab-ab2 +2abc-2abc+5ab​

Answer 1

Answer:

• 15xy-2y+3z-2xy+yz-9z

= 15xy-2xy+3z-9z-2y+yz

= 13xy-6z-2y+yz

Step-by-step explanation:

2nd I don't know.

I am sorry