Question

How do I make both these equations into a elimination equation? Look at the pic I’m very confused!

Answer 1

Answer:

Step-by-step explanation:

c + a = 342 ..................... (1)

5c + 12a = 2550 ........... (2)

- 5 × (1) + (2)

7a = 840

a = 120

c = 342 - 120 = 222