Q. Find an expression which represents the sum of (9x−6) and (−9x+4) in simplest terms.Answer:
Write Expression: Write down the expression that needs to be simplified.We need to add (9x−6) and (−9x+4) together.
Combine Like Terms: Combine like terms.To combine like terms, we add the coefficients of the x terms together and the constant terms together.(9x−6)+(−9x+4)=9x+(−9x)+(−6)+4
Simplify Expression: Simplify the expression by adding the coefficients of x and the constant terms.9x+(−9x)=0x (since 9x and −9x are additive inverses of each other)(−6)+4=−2So, the expression simplifies to 0x−2, which is just −2 because 0x is 0.
More problems from Partial sums of geometric series