<u>Answer (1):</u>
Coefficient of any term means the number multiplied in that term including sign.
is same as
.
Hence required coefficient is 1.
<u>Answer (2):</u>





Hence final answer is 166
<u>Answer (3):</u>



Hence final answer is 
Answer:
Alvin is 47 and Elga is 35
I promise
They all get 20 cents per person
(-2,-3) and (-1,-3) do not satisfy the equation
For u and v to be parallel, angle 17x must equal angle 18x-3.
17x = 18x - 3 becomes x = 3 (answer)