Question

Simplify 2x – 9y + 4x + 11y by combining like terms and then evaluate at x = -2 and y = 4.

Answer 1

Step-by-step explanation:

= 2x - 9y + 4x + 11y

First of all combining like terms

So

= 2x + 4x - 9y + 11y

= 6x + 2y

Now putting values

= 6 (-2) + 2(4)

= - 12 + 8

= - 4