Question

Plzzz help Y=-5x+21 I really need help and can you show the steps too?

Answer 1

x = 3

Explanation:

use the substitution method

since y = 6 fill in 6 for y in y = -5x + 21

6 = -5x + 21

subtract 21 from both sides

-15 = -5x

divide each side by -5

3 = x

hope this helps :)