Question

− 4 − (x − y)− 5 + (x + 3y)− 2 − {x − 3y + 5 − [− x + y −1+ 2 + (x − y)]}=

Answer 1

Explicación paso a paso:

-4-x+y+x+3y-2-{x-3y+5-[-x+y-1+2+x-y]}=

-4-x+y+x+3y-2-{x-3y+5+x-y+1-2-x+y}=

-4-x+y+x+3y-2-x+3y-5-x+y-1+2+x-y=

-10-x+7y