-2 because in the second equation it is : 2x. If you multiply x in the first equation by -2 it will cancel out 2x in the second equation. -2x cancels out 2x. -2x+2x=0
my answer is 232.2 i got it by adding 50, 220, 250, 410 which would be 930 and then you divide it by 4 because that is how many numbers there are so the answer would be 232.2 that is the average.
hope this helps if that is what the question asked.
2,3,5,7,11,13. they are the mcd of 2 prime numbers.
Answer:

Step-by-step explanation:
Based on given conditions, formulate:

Calculate the sum:

Simplify it:

Convert that to a decimal:

Multiply that:

Calculate that:

Convert that:
