Question

use the subsition method to find the sum of values of a, b,c such that a+3b=5, 2a-5c=13, 4b-c=11​

Answer 1

Step-by-step explanation:

Sum of −2a+b−5c and 3a−2b+c = −2a+b−5c+3a−2b+c

= a−b−4c

Subtracting 3a−2b+4c from a−b−4c

= a−b−4c−(3a−2b+4c)

=a−b−4c−3a+2b−4c

=−2a+b−8c