(a-3b+4c)+(-7c-9+4b)
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Answer3a + 5b + 7c = 30
(2a + 3b + 4c) + (a + 2b + 3c) = 30
35 + (a + 2b + 3c) = 30
a + 2b + 3c = -5______(1)
Now, using the first equation
2a + 3b + 4c = 35
( a + 2b + 3c) + (a + b + c)=35
-5 +(a + b + c)=35 [ using__(1)]
Answered by
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Answer:
a+b-3c-9
Step-by-step explanation:
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