Question

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

Answer 1

`=2x + 6y`

Explanation:

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

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`

`=2x + 6y`