Answer: second option Let (2a +1) be an odd number. Let (2b +1) be a different odd number. Because the sum of these two numbers, 2(a + b + 1), is a multiple of 2, it is an even number.
5x - 10y = -40
-10y = -40 - 5x
y = -40 - 5x / -10
I'm sorry but what's the full question?
Answer: See attached.
Step-by-step explanation: