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27-01-2021
Mathematics

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

How do I make both these equations into a elimination equation Look at the pic Im very confused class=

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xenia168 xenia168

27-01-2021

Answer:

Step-by-step explanation:

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

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

- 5 × (1) + (2)

7a = 840

a = 120

c = 342 - 120 = 222

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