goargrant
27.01.2021 •
Mathematics
How do I make both these equations into a elimination equation? Look at the pic I’m very confused!
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Ответ:
Step-by-step explanation:
c + a = 342 ..................... (1)
5c + 12a = 2550 ........... (2)
- 5 × (1) + (2)
7a = 840
a = 120
c = 342 - 120 = 222
Ответ:
multiply 3 and 12 to get 36
20/36
Simplify
2:3
Hope this helped!