Question

How do you evaluate the expression 9x + 6y + 5x + 4y if x=7,y=9?

Answer 1

`188`

Explanation:

Calculate `9x+6y+5x+4y` first as usual

`=9x+6y+5x+4y`

`=14x+10y`

Substitute `x=7` and `y=9` into `14x+10y`

`=14(7)+10(9)`

`=98+90`

`=188`