You need to do the ones in the parentheses first
Just change the y to all of the answers. The correct answer to this particular one is D. 4
Answer:
23 1/4
Step-by-step explanation:
Answer:


Step-by-step explanation:
We are given


Calculation of P+Q:

now, we can combine like terms



Calculation of Q-P:

Firstly, we will distribute negative sign

now, we can combine like terms

