Ask Question
25 September, 20:24

Use the substitution method to solve the system of equations.

3x+7y=1

y=x-7

A. 5,-2

B. 3,-4

C. 4,-3

D. 2,-5

+3
Answers (1)
  1. 25 September, 20:50
    0
    A x=5 y=-2

    Step-by-step explanation:

    y = x - 7; 3 x + 7 y = 1

    y = x - 7

    Substitute

    x - 7 for y in 3 x + 7y = 1:

    3x + 7y = 1

    3x + 7 (x-7) = 1

    10x - 49 = 1

    10x = 50

    x = 5

    Substitute:

    y = 5 - 7

    y = - 2
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Use the substitution method to solve the system of equations. 3x+7y=1 y=x-7 A. 5,-2 B. 3,-4 C. 4,-3 D. 2,-5 ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers