Question

Simplify the following expression.

a + 2c - 5b - c + a - b

Answer 1

Combine like terms. Like terms have the same variable part (the letter part).
a and a are like terms
2c and -c are like terms
-5b and -b are like terms
A term written with no number, is as if the number 1 is there:
a = 1a
-a = -1a
To combine like terms, you add the number parts together and write the variable part afterwards.
For example: 2a + 3a = 5a
2b - b = 2b - 1b = 1b = b

Answer 2

thanks this helped