215k views
3 votes

−5y=−5 THANKS
7x+6y=7

Is (5,1) a solution of the system?

User Mkab
by
5.7k points

2 Answers

5 votes

Answer:

No

Explanation:

User Evsheino
by
5.7k points
5 votes

Answer:

{x = 1/7 ,y = 1

Explanation:

Solve the following system:

{-5 y = -5 | (equation 1)

{7 x + 6 y = 7 | (equation 2)

Swap equation 1 with equation 2:

{7 x + 6 y = 7 | (equation 1)

{0 x - 5 y = -5 | (equation 2)

Divide equation 2 by -5:

{7 x + 6 y = 7 | (equation 1)

{0 x+y = 1 | (equation 2)

Subtract 6 × (equation 2) from equation 1:

{7 x+0 y = 1 | (equation 1)

{0 x+y = 1 | (equation 2)

Divide equation 1 by 7:

{x+0 y = 1/7 | (equation 1)

{0 x+y = 1 | (equation 2)

Collect results: Answer: {x = 1/7 ,y = 1

User Ksol
by
5.5k points