Solve the following system of equations using substitution. Upload a picture of your work for full credit. x= 20 + 6y 3x – 3y = 15 SHOW WORK!!

Question

asked Aug 9, 2022 221k views

1 Answer

Anedar · Answer 1 · 2022-08-15T01:22:58+0000

Answer:

x = 2, y = -3

Explanation:

Substitute x = 20 + 6y into 3x - 3y = 15:

$3 (20+6y) - 3y = 15\\60 + 18y - 3y = 15\\60 + 15y = 15\\15y = -45\\y = -3$

Substitute this back into the equation x = 20 + 6y

$x = 20 + 6 * (-3)\\x = 20 - 18\\x = 2$