Answer:
Answer is B=280
Step-by-step explanation:
6)/7=>>}{÷\¦^~<]||]>^¬)56)7899)/,))-557:
The set of integers is closed under addition, subtraction, and multiplication because when i add, subtract, or multiply any integers, the result is always an integer.
Answer:

Step-by-step explanation:
Equation:1
Equation:2
Solving Equation:1

Subtracting 'y' from both the sides:

Putting 'x' in Equation :2

Adding '4' both the sides

Putting the value of 'y' in equation:1


The solution is:

I think it's another trick question and the answer is 2000.