Question

what should be added to 2a-b+c to make it a+ b- 2c?​

Answer 1

Answer:

Hello✌️✌️✌️✌️

Step-by-step explanation:

Let the number to be added be x

(2a - b + c) + x = a + b - 2c

x = a + b - 2c - (2a - b + c)

x = a + b - 2c - 2a + b - c

x = -a + 2b - 3c

Answer 2

2a-2b+3c
I hope this helps you