Question

i) Add 3a-4b+4c, 2a+3b-8c, a-6b+c.




ii)Subtract 2a-5b+2c-9 from 3a-5b+3c-8

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Answer 1

Answer:

I) 3a-4b+4c+2a+3b-8c+a-6b+c

collect like terms,

3a+2a+a-4b+3b-6b+4c-8c+c

6a-7b-3c is the answer.

ii) 3a-5b+3c-8-2a-5b+2c-9

collect like terms

3a-2a-5b-5b+3c+2c-8-9

a-10b+5c-17 is the answer.

Answer 2

Answer:

i) 6a-7b-3c

Step-by-step explanation:

i) 3a-4b+4c+2a+3b-8c+a-6b+c 3a+2a+a-4b+3b-6b+4c-8c+c

Answer : 6a-7b-3c

Answer: ii)a+c+1

Step-by-step explanation:

ii) 3a-5b+3c-8 -(2a-5b+2c-9) 3a-5b+3c-8-2a+5b-2c+9 3a-2a-5b+5b+3c-2c-8+9

a+0+c+1

Answer : a+c+1

Note: When bracket is removed then the signs inside it is changed

Note: When subtraction is done between two terms then we have to put bracket before the second term