Answer :
Answer:
1) Option C
2) Option C
3) Option B
4) Option B
5) Option A
Step-by-step explanation:
1) Identify the like terms ?
Terms are 9x, 10y, –9y, 10.
Like terms are those having same variable.
i.e. 10 y and -9y are like terms.
So, Option C is correct.
2) The term 25ab and which other term are like terms?
Option terms are 25,24a,5ba,10b
Like terms are those having same variable form.
i.e. 25ab and 5ba are like terms.
So, Option C is correct.
3) Combine like terms.
Expression [tex]15w-28w[/tex]
combine like terms means adding and subtracting like terms with same variable.
i.e. [tex]15w-28w=-13w[/tex]
So, Option B is correct.
4) Combine like terms.
Expression [tex]9+18s- 7s[/tex]
combine like terms means adding and subtracting like terms with same variable.
i.e. [tex]9+18s- 7s=9+11s[/tex]
So, Option B is correct.
5) Combine like terms.
Expression [tex]\frac{5}{6}x-\frac{2}{3}x[/tex]
combine like terms means adding and subtracting like terms with same variable.
i.e. [tex]\frac{5}{6}x-\frac{2}{3}x=\frac{1}{6}x[/tex]
So, Option A is correct.