Question 69895

Note that -(6x+3y), for example, is the same as -1 times (6x+3y) which 
equals (-1)*(+6x) +(-1)*(+3y) and this equals -6x-3y

Remember: plus times minus equals minus and vice versa


(4x-5y)-(6x+3y)-(7x+2y)  We will get rid of the parens

4x-5y-6x-3y-7x-2y  collect like terms
-9x-10y



Hope this helps---ptaylor