Question

simplify: (15a+2b+c)+(a+b-c)-(3a-b-2c).​

Answer 1

13a+2b-2c

Step-by-step explanation:

15a+2b+c+a+b-c-3a-b-2c

Answer 2

Answer:

13a+4b+4c

Step-by-step explanation:

15a+2b+c+(a+b-c)-(3a-b-2c)

opening brackets

15a+2b+c+a+b+c-3a+b+2c

arranging like terms together

15a+a-3a+2b+b+b+c+c+2c

13a+4b+4c