You need to use a common denominator. The least common denominator of 11 and 22 is 22.
3/22 + -1/11 = 3/22 + -2/22 = 3/22 - 2/22 = 1/22
Answer:


Step-by-step explanation:
The question relates with rules of indices
(a) The give expression is presented as follows;

By expanding the expression, we get;

Collecting like terms gives;


(b) The given expression is presented as follows;

Therefore, we get;

Collecting like terms gives;



Answer:
Don't lisen to that the anwer is 0.3125
Step-by-step explanation:
3 tens= 30
7 tenths= 0.7
8 hundredths= 0.08
so 30+ 0.7+0.08= 30.78
D.) Subtracting 9 from each side.