How do you simplify the expression: 9x + 4y - 7x + 2y?

Apr 1, 2016

$= 2 x + 6 y$

Explanation:

$9 x + 4 y - 7 x + 2 y$

Grouping like terms:

=color(blue)(9x) + color(green)(4y) color(blue)(- 7x) + color(green)( 2y

=color(blue)(9x - 7x ) + color(green)(4y) + color(green)( 2y

=color(blue)(2x ) + color(green)(6y

$= 2 x + 6 y$