Question

if x+y=3 and x-y=5 then the valve of x and y are
A). (2,3)
B). (4,-1)
C). (2,-1)
D). (3,4)​

Answer 1

Answer:

B

Step-by-step explanation:

because

4+(-1)=3

4-1=3 (the sign changed because plus × minus= minus)

3=3

4-(-1)=5

4+1=5 (sign changed because minus × minus= plus)

5=5