It is: 34 -5y simplified
5y - 4 + 9y - 1y + 15= 5y + 9y - 1y + 15 - 4= (5 + 9 - 1)y + (15 - 4)= 13y + 9
5y + 5y = 10y
11x + 5y
It is: 7x+10y
6y
6 - y + 5y - 6y = 6 - 2y
It is: 34 -5y simplified
2
5y - 4 + 9y - 1y + 15= 5y + 9y - 1y + 15 - 4= (5 + 9 - 1)y + (15 - 4)= 13y + 9
That will depend on the plus or minus value of 4y in order to simplify the given expression
5y + 5y = 10y
2x+5y-7x+2xy combine like terms 5y-5x+2xy that's simplified because there are only 3 terms (x, y, and xy) you cannot combine x and y unless it's being multiplied
11x + 5y
It is: 7x+10y
27
The Abelian property or commutativity.