Question 55194
{{{ 3-(7x+2y-(5x-9y)+2x+4y) }}}
Start by distributing the undertood value of -1 across the (5x-9y) thereby changing their signs
{{{ 3-(7x+2y-5x+9y+2x+4y) }}}
Combine like terms within the ( )
{{{ 3- (4x+ 15y) }}}
Distribute the undertood value of -1 across the (4x+15y) thereby changing their signs
{{{ 3-4x-15y) }}}
While this is technically correct, your teacher may wish you to put it in "proper order"
{{{ -4x-15y+3 }}}