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

1 Answer
Don't Memorise
Apr 1, 2016

=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

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