1.5r-5r+3r-8
Subtract 1.5r-5r= -3.5r
Add -3.5r+3r= -0.5r
The answer is -0.5 - 8
The coefficient is 12a because it has a variable (a).
The answer to this question is D
Answer:

Step-by-step explanation:

Here we can solve this in 2 ways ,
Method 1 :

Here the bases are equal. So,

Method 2 :

Here the exponents are same. So,

Answer
XY = 54 units
Explanation
We are told that W is in between X and Y. This means that
XY = XW + WY
WX = XW = 38
WY = 16
XY = ?
We just make the necessary substitutions
XY = XW + WY
XY = 38 + 16 = 54 units
Hope this Helps!!!