Question

find the answer and explain 3a-a+b-b+4

Answer 1

3a-a+b-b+4
=2a+0+4
=2a+4

Answer 2

Hey friend here is your answer

3a - a + b - b + 4

2a + b - b + 4

2a + 0 + 4

2a + 4

2 ( a + 2)

Hope it helps you.