Question

If A = 2a + 3b + c , B = 18a + 27c - 6b , and C = 3a + 9c + 12b , then find 2A + 1/3 B - 2/3 C
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Answer 1

Answer:

8a-4b-5c

Step-by-step explanation:

Given,

A=2a+3b+c

B=18a+27c-6b

C=3a+9c+12

Now, putting value in

2A+1/3.B-2/3.C

= 2(2a+3b+c)+1/3.(18a+27c-6b)-2/3.(3a+9c+12b)

= 4a+6b+2c+6a+9c-2b-2a-6c-8b

= 8a-4b-5c

Answer 2

Answer:

8a-4b+5c

Step-by-step explanation:

2A= 4a+6b+2c

B/3= 6a+9c-2b

2C/3=2a+6c+8b

2A+B/3-2C/3=8a-4b+5c