Question

Simplify the following expression: a + 2c − 5b − c + a − b 2a − 6b + 2c 2a − 6b + c a − 6b + c a − 5b + 2c

Answer 1

The answer is 2a − 6b + c.

I got it correct on the test :)

Answer 2

Answer: The correct expression is

(B)
`2a-6b+c.`

Step-by-step explanation: We are given to simplify the following expression :

`E=a+2c-5b-c+a-b~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)`

To simplify the given expression (i), we need to combine the like terms.

The simplification of expression (i) is as follows :

`E\\\\=a+2c-5b-c+a-b\\\\=(1+1)a+(-5-1)b+(2-1)c\\\\=2a-6b+c.`

Thus, the required simplified answer is
`2a-6b+c.`

Option (B) is CORRECT.