Question

Find the sum. 3a - 4b, 7b + c, c - 3a, and a + b - 2c

Answer 1

required sum=a+4b

Explanation:

given 3a-4b,7b+c,c-3a and a+b-2c

required sum=3a-4b+7b+c+c-3a+a+b-2c

=3a-3a+a-4b+7b+b+c+c-2c

=a+4b

hence required sum=a+4b answer