Question

Use the elimination method to solve the system of equations. Choose the correct ordered pair.

7x + 4y = 39
2x + 4y = 14

A. (3, 4)
B. (5, 1)
C. (3, 2)
D. (5, 4)

Answer 1

What do you get as the answer?

Answer 2

I got A

Answer 3

Let me solve it for you:

\(\Large \color{purple}{\rightarrow5x = 25 }\)
You subtract both LHS and RHS of BOTH THE EQUATIONS.

\(\Large \color{purple}{\rightarrow x = 5 }\)

Now,

\(\Large \color{purple}{\rightarrow 10 + 4y = 14 }\)
\(\Large \color{purple}{\rightarrow 4y = 4 }\)
\(\Large \color{purple}{\rightarrow y = 1 }\)

Answer would be (5,1)

Answer 4

Answer is b.(5,1)

Answer 5

I must be did something wrong then