How do you evaluate the expression 6x + 2y + 5y + 7 +y if x=8, y=1?

1 Answer
Mar 4, 2018

See a solution process below:

Explanation:

For each occurrence of color(red)(x) substitute color(red)(8)

And, For each occurrence of color(blue)(y) substitute color(blue)(1)

6color(red)(x) + 2color(blue)(y) + 5color(blue)(y) + 7 + color(blue)(y) becomes:

(6 xx color(red)(8)) + (2 xx color(blue)(1)) + (5 xx color(blue)(1)) + 7 + color(blue)(1)

48 + 2 + 5 + 7 + 1

50 + 12 + 1

62 + 1

63