Solve the system of equations by substitution.
-x + 7y = -2 3x + y = 34
A)(7, 12)
B)(3, 7)
C)(-2, 3)
D)(12, -2)

Name: Solve the system of equations by substitution. -x + 7y = -2 3x + y = 34 A)(7, 12) B)(3, 7) C)(-2, 3) D)(12, -2)
Brand: Quizplus
Rating: 4.8 (34 reviews)

Question

Quizplus · Accepted Answer

Substitute x = -7y - 2 from the first equation into the second equation: 3(-7y - 2) + y = 34. Simplify to get -21y - 6 + y = 34, which simplifies to -20y = 40, so y = -2. Substitute y = -2 back into x = -7y - 2 to find x = 12. Thus, the solution is (12, -2).

Solve the System of Equations by Substitution