georgiebickling georgiebickling

17-10-2019
Mathematics

contestada

2a - 4c = 20
-3a+b-4c=20
- 4a + 2b + 3c = -15

Respuesta :

maryamsamiyah maryamsamiyah

17-10-2019

Answer: 15-9a+b+3c

Step-by-step explanation:

~ 2a-4c = 20-3a+b-4c = 20-4a+2b+3c = -15

~ 20-5a+b=20-4a+2b+3c=-15

~ -9a+b+3c = -15

~ 15-9a+b+3c

Answer Link

angelicsoul angelicsoul

18-12-2019

Answer: 15-9a+b+3c

Step-by-step explanation:

~ 2a-4c = 20-3a+b-4c = 20-4a+2b+3c = -15

~ 20-5a+b=20-4a+2b+3c=-15

~ -9a+b+3c = -15

~ 15-9a+b+3c

Answer Link

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