Question

5. Subtract the sum of 3a - 2b + 5c, 5a + 7b-2c and - 3a + 4b - 2c from the sum of 2a - 3b - 3c, 4a- 7b + c and 5a + 4b - 3c.

and answer comes 6a-15b-6c

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Answer 1

Answer:

Starting with the second given equation;

3a + 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)]

a + b +c=40

Answer 2

Answer:

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Step-by-step explanation:

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