Question

The sum of two expressions is a – b + 4c if one of the term is 2a – 7b – c, find the other.
24. What should be subtracted from -11p + 3q – 5r to obtain 15p – 17q + 7r.
25. How much is a3 + b3 + c3 less than -2a3 + 5b3 – 9c3?

Answer 1

Answer:

ist expression is a-b+4c

sum of two expression is 2a-7b-c

let the second expression be x.

hence,2a-7b-c-(a-b+4c)=x

2a-7b-c-a+b-4c=x

a-6b-5c=x

hence,other expression is a-6b-5c

24.let the term subtracted be x.

hence,-11p+3q-5r-x=15p-17q+7r

x=15p-17q+7r-(-11p+3q-5r)

x=15p-17q+7r+11p-3q+5r

x=26p-20q+12r

25.-2a^3+5b^3-9c^3-a^3-b^3-c^3=-3a^3+4b^3-10c^3

Step-by-step explanation:

hope it helped u

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Answer 2

Answer:

hi sheryan

Step-by-step explanation: