Question

how do I slove


xy + 3xy - 45 =

I really need help on this thanks.

Answer 1

Answer:

xy+3xy-45=0

4xy-45=0

4xy=45

xy=45/4

xy=11.25

Answer 2

Answer:

=> xy+3xy-45=0

=> xy+3xy =45

=> xy+xy =45÷3=15

=> 3xy=15

=> xy =15/3

=> xy =5