Question

How do you evaluate the expression 8x + 8y + x + 6y+ 4x if x= 1, y= 2?

Answer 1

41

Explanation:

Well, it means, "replace x by 1 and y by 2 in the expression, and calculate."

So let's get it done with.
We have:
`8x +8y +x +6y +4x`
Putting x=1 and y=2, we have:
`=(8*1)+(8*2)+1+(6*2)+(4*1)`
`=8+16+1+12+4`
`=41`