Answer:
The solution is (6, 7)
Step-by-step explanation:
Let's solve this system by elimination by addition and subtraction. To accomplish this, subtract each term of the first equation by the corresponding term beneath it (e. g., subtract x in the first term from 4x in the second term):
3x = 18, which leads to x = 6.
Now substitute 6 for x in the first equation. We get: 6 + y = 13, so y must be 7.
Substituting 7 for y in the second equation, we get 4x + 7 = 31, or 4x = 24.
Then x must be 6, and so
The solution is (6, 7)
