Question

equation 1 X + Y is equal to zero and equation to 2 x minus Y is equal to 9 solve the following sums in simultaneous method​

Answer 1

Answer:$

Step-by-step explanation:

Answer 2

Answer:

x=3,y=-3

as

3+(-3)=3-3=0

2×3-(-3)=6-(-3)=6+3=9