Question

From the sum of 4a + b + c and 9a - c subtract the sum of 18a - b - c and 14a - 2b - c

PLS): HELP ME ​

Answer 1

-19c + 4b + 2c

Explanation:

(4a + b + c + 9a - c) - (18a - b - c + 14a - 2b - c)

= (13a + b) - (32a - 3b - 2c)

= 13a + b - 32a + 3b + 2c

= -19c + 4b + 2c

Answer 2

1:-

`\\ \rm\Rrightarrow 4a+b+c+9a-c`

`\\ \rm\Rrightarrow 4a+9a+b+c-c`

`\\ \rm\Rrightarrow 13a+b`

2:-

`\\ \rm\Rrightarrow 18a-b-c-(14a-2b-c)`

`\\ \rm\Rrightarrow 18a-b-c-14a+2b+c`

`\\ \rm\Rrightarrow 18a-14a-b+2b-c+c`

`\\ \rm\Rrightarrow 4a+b`