Eighth grade AA.8 Solve a system of equations using substitution clouds Solve using substitution. 4x + 7y = 9 y = 3 ( , ) Submit

Question

asked Dec 28, 2020 126k views

1 Answer

Dwinnbrown · Answer 1 · 2021-01-02T03:12:09+0000

Answer: (-3, 3)

Explanation:

4x + 7y = 9

y = 3

Replace "y" with "3" in the first equation to solve for x:

4x + 7(3) = 9

4x + 21 = 9

4x = -12 subtracted 21 from both sides

x = -3 divided both sides by 4