Answer:
C
Step-by-step explanation:
Given the 2 equations
x = 12 - y → (1)
2x + 3y = 29 → (2)
Substitute x = 12 - y into (2)
2(12 - y) + 3y = 29 ← distribute and simplify left side
24 - 2y + 3y = 29
24 + y = 29 ( subtract 24 from both sides )
y = 5
Substitute y = 5 into (1)
x = 12 - 5 = 7
Solution is x = 7, y = 5 → C
